| date | | PROref | source |
| 1909 | Cumming sets up SSB in Whitehall Court |
| Christopher Andrew Secret Service |
| 1909 | Home dept of SSB became later MI5 |
| Christopher Andrew Secret Service |
| 1909 | Foreign Dept of SSB became later SIS |
| Christopher Andrew Secret Service |
| 1909 | First head of home dept Vernon Kell |
| Christopher Andrew Secret Service |
| 1909/10 | First head of foreign section SSB |
| Christopher Andrew Secret Service |
| 1910 | Foreign section of SSB responsible to Ad |
| Christopher Andrew Secret Service |
| 1912 | Kell's deputy Holt-Wilson |
| Christopher Andrew Secret Service |
| 1913/06 | New head of Special Branch Basil Thomson |
| Christopher Andrew Secret Service |
| 1914 | Room 40 |
| Christopher Andrew Secret Service |
| 1914 | Ewing recruits Denniston |
| Christopher Andrew Secret Service |
| 1914/08 | DID recruits Sir Alfred Ewing |
| Christopher Andrew Secret Service |
| 1914/10 | Breach between Admiralty and WO |
| Christopher Andrew Secret Service |
| 1914/11 | Director Naval ID William Blinker Hall |
| Christopher Andrew Secret Service |
| 1915 | Recruits for room 40 |
| Christopher Andrew Secret Service |
| 1915 | Dispute for control Ewing, Hall |
| Christopher Andrew Secret Service |
| 1915 | Admiralty decisive lead over WO |
| Christopher Andrew Secret Service |
| 1915 | Brief for Secret Int. Service |
| Patrick Beesly Very Special Intelligenc1915 |
| 1916 | Room 40 people |
| Christopher Andrew Secret Service |
| 1916 | Clarke recruited by Blinker Hall 1916 |
| W F Clarke in Cryptologia Oct 1987 |
| 1916 | W F Clarke recruited by Hall for Rm 40 |
| W F Clarke Bletchley Park 1941-45 Crypto1916 |
| 1916/10 | Ewing resigns |
| Christopher Andrew Secret Service |
| 1917 | ID25 Commander William James |
| Christopher Andrew Secret Service |
| 1918 | MI5 after 1918 list of suspects |
| Christopher Andrew Secret Service |
| 1918 | Org charts for DMI 1918 |
| Patrick Beesly Very Special Intelligenc1918 |
| 1919 | Admiral Sinclair DNI and Dir. GC&CS |
| A G Denniston GC&CS between the wars |
| 1919 | origins of GC&CS |
| A G Denniston GC&CS between the wars |
| 1919 | Appointed Director Naval Int. DNI |
| Nigel West MI6 |
| 1919 | SIS off to a shaky start |
| Nigel West MI6 |
| 1919 | Passport Control |
| Christopher Andrew Secret Service |
| 1919 | Head of GC&CS Alistair Denniston |
| Christopher Andrew Secret Service |
| 1919 | Formation of GC&CS |
| Christopher Andrew Secret Service |
| 1919 | MIIc became known as Secret Int Serv SIS |
| Christopher Andrew Secret Service |
| 1919 | Scotland Yard v MI5 |
| Christopher Andrew Secret Service |
| 1919 | SIS and Security Service tasks after WWI |
| Patrick Beesly Very Special Intelligenc1919 |
| 1919 | formation of GC&CS |
| Patrick Beesly Very Special Intelligenc1919 |
| 1919 | Name GC&CS invented by Sir Victor Forbes | HW3/
33 | Notes on BP history 1948 HW3/33 |
| 1919/02 | Passport Control set up |
| Christopher Andrew Secret Service |
| 1919/05 | Secret Service Commission |
| Christopher Andrew Secret Service |
| 1919/11 | GC&CS formed November 1919 under Admlty |
| W F Clarke in Cryptologia Oct 1987 |
| 1920 | Admiralty Y Pembroke & Scarborough |
| A G Denniston GC&CS between the wars |
| 1920 | GC&CS staff 6 snr 18 jnr 28 clerks |
| Christopher Andrew Secret Service |
| 1921 | WO MI1B at Chatham liaison off. at GC&CS |
| A G Denniston GC&CS between the wars |
| 1921 | Naval Section |
| A G Denniston GC&CS between the wars |
| 1921 | Left to head submarine services |
| Nigel West MI6 |
| 1921 | Head of Section I in SIS, FO |
| Christopher Andrew Secret Service |
| 1921 | Cumming's espionage agency known as SIS |
| Christopher Andrew Secret Service |
| 1922 | GC&CS transfered to FO |
| A G Denniston GC&CS between the wars |
| 1922 | FO took control of GC&CS |
| W F Clarke in Cryptologia Oct 1987 |
| 1922 | GC&CS transfered to FO Chief Clerks Dept | HW3/
33 | Notes on BP history 1948 HW3/33 |
| 1922- | civil establishment |
| A G Denniston GC&CS between the wars |
| 1922- | Decline of forces intelligence |
| Christopher Andrew Secret Service |
| 1922- | Org charts for DMI 1922-39 |
| Patrick Beesly Very Special Intelligenc1922- |
| 1922/04 | FO takes over responsibility for GC&CS |
| Christopher Andrew Secret Service |
| 1923 | Returned on death of Cummings "C" |
| Nigel West MI6 |
| 1923 | Head of Military Section II |
| Christopher Andrew Secret Service |
| 1923 | Sinclair's Deputy, Menzies, biopic |
| Christopher Andrew Secret Service |
| 1923 | Admiral Hugh Sinclair appointed "C" biop |
| Christopher Andrew Secret Service |
| 1923 | Sinclair acquired Denmark Hill intercept | HW3/
33 | Notes on BP history 1948 HW3/33 |
| 1923 | Denmark Hill first under GC&CS control | HW3/
33 | Notes on BP history 1948 HW3/33 |
| 1923 | Intcpt and Crypt transfered to FO, GC&CS | HW3/
92 | Hist of Military Intelligence 1926-45 H1923 |
| 1923 | MI1(b) lost crypt but retaind Intcpt org | HW3/
92 | Hist of Military Intelligence 1926-45 H1923 |
| 1923- | Organisation of SIS |
| Christopher Andrew Secret Service |
| 1923/06 | Cumming's death June 1923 |
| Christopher Andrew Secret Service |
| 1923/06 | Death of Sir Mansfield Cumming |
| Patrick Beesly Very Special Intelligenc1923/06 |
| 1924 | AM AII Waddington |
| A G Denniston GC&CS between the wars |
| 1924 | Naval section |
| Nigel West MI6 |
| 1924 | Head of Section III in SIS, Naval |
| Christopher Andrew Secret Service |
| 1924 | Small Naval section under Admiralty |
| Christopher Andrew Secret Service |
| 1924 | Naval Section formed 1924 |
| W F Clarke in Cryptologia Oct 1987 |
| 1924 | Grp Cpt Blandy at 1st meeting Main Cttee | HW3/
95 | Nigel de Grey Sitz & Blitz Hist of BP 1924 |
| 1924-1938 | Hugh Sinclair's career |
| Nigel West MI6 |
| 1925 | GC&CS moved to Broadway |
| Patrick Beesly Very Special Intelligenc1925 |
| 1925 | SIS under FO and funded by FO, aka MI6 |
| Patrick Beesly Very Special Intelligenc1925 |
| 1925 | Col Spencer: WO provide Field Cryptograp | HW3/
92 | Hist of Military Intelligence 1926-45 H1925 |
| 1925 | Officrs attached to GC&CS for training | HW3/
92 | Hist of Military Intelligence 1926-45 H1925 |
| 1925- | Notes on staff numbers and names 1925-39 | HW3/
82 | Staff and Establishment of GC&CS 1925-191925- |
| 1926 | Japanese code breaking |
| Christopher Andrew Secret Service |
| 1926 | J E S Cooper, F C Fletcher,W Bodsworth | HW3/
82 | Staff and Establishment of GC&CS 1925-191926 |
| 1926-1938 | Coord of W/T Intcpt Cttee (Main Ctte) | HW3/
92 | Hist of Military Intelligence 1926-45 H1926-1938 |
| 1926/03 | Chatham opened 5 ops 1 Offcr March 1926 | HW3/
92 | Hist of Military Intelligence 1926-45 H1926/03 |
| 1927 | Russian section |
| Christopher Andrew Secret Service |
| 1928 | Y committee formed to co-ordinate intcpt |
| Patrick Beesly Very Special Intelligenc1928 |
| 1929 | Intervewed Winterbotham |
| Nigel West MI6 |
| 1929 | GC&CS "distant" from SIS although in Bdw |
| Christopher Andrew Secret Service |
| 1929 | 3 Offcrs charge Intcpt meet@GC&CS,"Y"cte | HW3/
92 | Hist of Military Intelligence 1926-45 H1929 |
| 1930 | Army section |
| Nigel West MI6 |
| 1930 | Assessment of Soviet air strength |
| Nigel West MI6 |
| 1930 | MI5 shortage of resources |
| Christopher Andrew Secret Service |
| 1930 | Head of Section IV in SIS, Air |
| Christopher Andrew Secret Service |
| 1930 | No Air reps at SIS until 1930 |
| Christopher Andrew Secret Service |
| 1930 | Mil Sectn GC&CS,No 4IS under Tiltman | HW3/
92 | Hist of Military Intelligence 1926-45 H1930 |
| 1930 | In wartime 4IS at GC&CS direct cntl WO | HW3/
92 | Hist of Military Intelligence 1926-45 H1930 |
| 1930- | Military Section under Tiltman MI1 |
| A G Denniston GC&CS between the wars |
| 1930- | Military section started by Tiltman |
| A G Denniston GC&CS between the wars |
| 1930- | failure to crack codes in 1930's |
| Christopher Andrew Secret Service |
| 1930- | NID not using GC&CS decrypts |
| Christopher Andrew Secret Service |
| 1930- | SIS shortage of funds |
| Christopher Andrew Secret Service |
| 1930- | sucesses with Japanese, Italian |
| Christopher Andrew Secret Service |
| 1930- | Y stations at Chatham and nr Winchester |
| Patrick Beesly Very Special Intelligenc1930- |
| 1930/01 | Air Section of SIS |
| Nigel West MI6 |
| 1933 | Commintern radio traffic decrypted |
| Christopher Andrew Secret Service |
| 1934-1941 | list of reports refered to by W F Clarke | HW3/
16 | War 1939-41 by W F Clarke, Hist Naval Se1934-1941 |
| 1935 | Air Section formed with Cooper as head |
| A G Denniston GC&CS between the wars |
| 1935 | figures for trained German pilots |
| Christopher Andrew Secret Service |
| 1935 | Admiral Sinclair was "C" | HW3/
33 | Josh Cooper's Hist of Air Section GC&CS 1935 |
| 1935 | Need increase staff cover Ital/Abassinia | HW3/
33 | Josh Cooper's Hist of Air Section GC&CS 1935 |
| 1935- | Enigma and Typex unbreakable if used ok |
| Patrick Beesly Very Special Intelligenc1935- |
| 1936 | Navy Enigma under Knox |
| A G Denniston GC&CS between the wars |
| 1936 | RAF section started by Cooper |
| A G Denniston GC&CS between the wars |
| 1936 | Air section |
| Nigel West MI6 |
| 1936 | No Air reps at GC&CS until 1936 |
| Christopher Andrew Secret Service |
| 1936 | 1st tsks Air Sectn Italian Air & Russian | HW3/
33 | Josh Cooper's Hist of Air Section GC&CS 1936 |
| 1936 | At Waddington Swanborough on GAF OrdOBat | HW3/
83 | memo from Josh Cooper to Travis 1944 HW1936 |
| 1936 | At Air Min Allen on Ital Air OrdOBat | HW3/
83 | memo from Josh Cooper to Travis 1944 HW1936 |
| 1936 | Air Min Italian country Sctn und Paynter | HW3/
83 | memo from Josh Cooper to Travis 1944 HW1936 |
| 1936- | Organisation of SIS & GC&CS interwars |
| Codebreakers William Millward |
| 1936- | Travis involved with encipherement |
| Hut 6 Story Gordon Welchman |
| 1936/05 | Cooper head of Air section GC&CS May 36 | HW3/
33 | Josh Cooper's Hist of Air Section GC&CS 1936/05 |
| 1936/05 | Air secn Fetterlein, Wills, Moore | HW3/
33 | Josh Cooper's Hist of Air Section GC&CS 1936/05 |
| 1936/05 | Air Section terms of ref "to produce Int | HW3/
33 | Josh Cooper's Hist of Air Section GC&CS 1936/05 |
| 1936/05 | Air Min already getting PL GAF Waddingtn | HW3/
33 | Josh Cooper's Hist of Air Section GC&CS 1936/05 |
| 1936/05 | Fl Lt Allen AI1(c) doing Italian gnd air | HW3/
33 | Josh Cooper's Hist of Air Section GC&CS 1936/05 |
| 1936/05 | Fetterlein trsfd Mility to Air for Russi | HW3/
33 | Josh Cooper's Hist of Air Section GC&CS 1936/05 |
| 1936/05 | No GAF cypher traffic of any kind | HW3/
33 | Josh Cooper's Hist of Air Section GC&CS 1936/05 |
| 1936/06 | JIC formed |
| Patrick Beesly Very Special Intelligenc1936/06 |
| 1936/07 | Spanish Civil War July 1936,Air took trf | HW3/
33 | Josh Cooper's Hist of Air Section GC&CS 1936/07 |
| 1937 | Military Section. First German |
| A G Denniston GC&CS between the wars |
| 1937 | attempts to read German Naval signals |
| A G Denniston GC&CS between the wars |
| 1937 | prewar GC&CS recruitment |
| Christopher Andrew Secret Service |
| 1937 | Chatham first German Army,Air,Police Int | HW3/
33 | Notes on BP history 1948 HW3/33 |
| 1937 | 1st German Air/Gnd cipher simple 2 lette | HW3/
33 | Josh Cooper's Hist of Air Section GC&CS 1937 |
| 1937 | Fl Lt Moore studying GAF safety Traffic | HW3/
33 | Josh Cooper's Hist of Air Section GC&CS 1937 |
| 1937 | Liaison Waddington, AI1(c) and AI3(b) | HW3/
33 | Josh Cooper's Hist of Air Section GC&CS 1937 |
| 1937 | Cooper proposed Int Reference Sctn inAir | HW3/
83 | memo from Josh Cooper to Travis 1944 HW1937 |
| 1937 | Winterbotham stops Int Ref proposal | HW3/
83 | memo from Josh Cooper to Travis 1944 HW1937 |
| 1937 | Barbara Abernethy joined SIS Ital 1937 |
| Interview with Barbara Eachus(Abernethy)1937 |
| 1937/04 | introduction of bigrams beats Knox |
| A G Denniston GC&CS between the wars |
| 1938 | acquisition of BP |
| R.V.Jones |
| 1938 | IIC under Desmond Morton to study Commcl |
| A G Denniston GC&CS between the wars |
| 1938 | SIS fall back position in BP |
| Nigel West MI6 |
| 1938 | first mathematician, Peter Twinn |
| Christopher Andrew Secret Service |
| 1938 | Professor types |
| Christopher Andrew Secret Service |
| 1938 | GC&CS move to BP |
| Patrick Beesly Very Special Intelligenc1938 |
| 1938 | parochial attitude of Services | HW3/
33 | Josh Cooper's Hist of Air Section GC&CS 1938 |
| 1938 | Experiment at decrypt at Waddington | HW3/
33 | Josh Cooper's Hist of Air Section GC&CS 1938 |
| 1938 | Cooper taken to task by Denniston | HW3/
33 | Josh Cooper's Hist of Air Section GC&CS 1938 |
| 1938 | L Lambert Radio Officer at GC&CS | HW3/
33 | Josh Cooper's Hist of Air Section GC&CS 1938 |
| 1938 | Moore collated Swanbo's OrdOBat with AM | HW3/
83 | memo from Josh Cooper to Travis 1944 HW1938 |
| 1938 | Moore, personal contacts with AI(1)b | HW3/
83 | memo from Josh Cooper to Travis 1944 HW1938 |
| 1938 | Cheadle TA went to Moore at Bdwy then AM | HW3/
83 | Memo from Josh Cooper to Travis 1944 HW1938 |
| 1938 | Chatham increased 6 High spd 18 Hand spd | HW3/
92 | Hist of Military Intelligence 1926-45 H1938 |
| 1938 | Sinclair,Peel told reporters "Air Defenc | HW3/
16 | W F Clarke, BP reminiscences HW3/16 |
| 1938 | German hand cyphers before the war | HW3/
17 | W Bodsworth answers to Christopher's qus1938 |
| 1938 | "FL" bigrams | HW3/
17 | W Bodsworth answers to Christopher's qus1938 |
| 1938 | Before war Travis thought get Int fmWT/I | HW3/
17 | W Bodsworth answers to Christopher's qus1938 |
| 1938-1945 | Strategical Intercept in UK pgs 842-808 | HW3/
92 | Hist of Military Intelligence 1926-45 H1938-1945 |
| 1938/03 | Moore joined Air Sectn March 1938 | HW3/
83 | memo from Josh Cooper to Travis 1944 HW1938/03 |
| 1938/05 | BP purchase |
| A G Denniston GC&CS between the wars |
| 1938/07 | Air Sectn expanded 4 new recruits | HW3/
33 | Josh Cooper's Hist of Air Section GC&CS 1938/07 |
| 1938/07 | Hooper, Vlasto, Fischer-Sobell joind Air | HW3/
33 | Josh Cooper's Hist of Air Section GC&CS 1938/07 |
| 1938/07 | Air Sect crammed in 5th Flr Broadway | HW3/
33 | Josh Cooper's Hist of Air Section GC&CS 1938/07 |
| 1938/07 | Heads of Air, Mil & Naval not own office | HW3/
33 | Josh Cooper's Hist of Air Section GC&CS 1938/07 |
| 1938/08 | Moore sent to Cheadle, not a success | HW3/
83 | Memo from Josh Cooper to Travis 1944 HW1938/08 |
| 1938/09 | first visit to BP |
| A G Denniston GC&CS between the wars |
| 1938/09 | GC&CS moved to BP Sept 1938 |
| W F Clarke in Cryptologia Oct 1987 |
| 1938/09 | Naval Section numbered 28 Ital,Germ,Span |
| W F Clarke in Cryptologia Oct 1987 |
| 1938/09 | Parts of GC&CS & SIS move to BP | HW3/
33 | Josh Cooper's Hist of Air Section GC&CS 1938/09 |
| 1938/09 | Cpt Ridley of SIS in charge of 1st move | HW3/
33 | Josh Cooper's Hist of Air Section GC&CS 1938/09 |
| 1938/09 | Admiral Sinclair sent his chef | HW3/
33 | Josh Cooper's Hist of Air Section GC&CS 1938/09 |
| 1938/09 | Move paid out of SIS funds | HW3/
33 | Josh Cooper's Hist of Air Section GC&CS 1938/09 |
| 1938/09 | Air Sectn in large gnd flr room | HW3/
33 | Josh Cooper's Hist of Air Section GC&CS 1938/09 |
| 1938/09 | 1st move showed need for better comms | HW3/
33 | Josh Cooper's Hist of Air Section GC&CS 1938/09 |
| 1938/09 | List of party that moved to BP Sept 38 | HW3/
82 | Naval Section GC&CS pre-war HW3/82 |
| 1938/09 | Barbara Abernethy came to BP in Sept 38 |
| Interview with Barbara Eachus(Abernethy)1938/09 |
| 1938/09 | Y ctte reorg Sept 1938 | HW3/
92 | Hist of Military Intelligence 1926-45 H1938/09 |
| 1938/09 | Y ctte Hd GC&CS,NID9,MI1(b)laterMI8,AI1e | HW3/
92 | Hist of Military Intelligence 1926-45 H1938/09 |
| 1938/09 | YC subctte Dep Hd,IOs,Hd Com,O/Cs Y stns | HW3/
92 | Hist of Military Intelligence 1926-45 H1938/09 |
| 1938/09 | YT subctte HD WBoard,NID9,MI1(b),AI1(e) | HW3/
92 | Hist of Military Intelligence 1926-45 H1938/09 |
| 1938/09 | YI subctte control of production of W/T | HW3/
92 | Hist of Military Intelligence 1926-45 H1938/09 |
| 1938/09 | Test Mobilisation of Station X Sept 38 | HW3/
16 | War 1939-41 by W F Clarke, Hist Naval Se1938/09 |
| 1938/09 | List of 24 staff going to BP Sept 38 | HW3/
16 | War 1939-41 by W F Clarke, Hist Naval Se1938/09 |
| 1938/09 | 1st occupation,150 Civ,Army&Navy | HW3/
16 | W F Clarke, BP reminiscences HW3/16 |
| 1938/09 | accomodated in Hotels around | HW3/
16 | W F Clarke, BP reminiscences HW3/16 |
| 1938/09 | The chef who tried to commit suicide | HW3/
16 | W F Clarke, BP reminiscences HW3/16 |
| 1938/10 | Naval section, German, transfered to NID |
| W F Clarke in Cryptologia Oct 1987 |
| 1938/10 | Returned to London 9th Oct 1938 |
| W F Clarke in Cryptologia Oct 1987 |
| 1938/10 | Return to Broadway | HW3/
33 | Josh Cooper's Hist of Air Section GC&CS 1938/10 |
| 1938/10 | Air Min annoyed not told of move | HW3/
33 | Josh Cooper's Hist of Air Section GC&CS 1938/10 |
| 1938/10 | DNI proposes NS transfd to OIC when war | HW3/
16 | War 1939-41 by W F Clarke, Hist Naval Se1938/10 |
| 1938/11 | first set of GAF Air/gnd tactical codes | HW3/
33 | Josh Cooper's Hist of Air Section GC&CS 1938/11 |
| 1938/11 | Waddington had moved to Cheadle | HW3/
33 | Josh Cooper's Hist of Air Section GC&CS 1938/11 |
| 1938/12 | Moore sent to Cheadle to exploit 3 lttr | HW3/
33 | Josh Cooper's Hist of Air Section GC&CS 1938/12 |
| 1938/12 | Moore seprated @ Cheadle,missed MF/HFLnk | HW3/
33 | Josh Cooper's Hist of Air Section GC&CS 1938/12 |
| 1938/12 | DNI has requested Operatnl Sectn go Adml | HW3/
1 | Naval Section in War memo by W F Clarke 1938/12 |
| 1938/12 | This would decimate GC&CS NS | HW3/
1 | Naval Section in War memo by W F Clarke 1938/12 |
| 1938/12 | NS not doing Operational Int just Int | HW3/
1 | Naval Section in War memo by W F Clarke 1938/12 |
| 1938/12 | Breakup of GC&CS NS would be a mistake | HW3/
1 | Memo to Travis ?Dec 1938 HW3/1 |
| 1938/12 | Part of Int side of NS to go to OIC | HW3/
1 | Memo to Travis ?Dec 1938 HW3/1 |
| 1939 | Head of Hut 3 Winterbotham |
| R.V.Jones |
| 1939 | Commandant at Minley Mabor, Shearer |
| Christopher Andrew Secret Service |
| 1939 | DNI John Godfrey, Room 39 |
| Christopher Andrew Secret Service |
| 1939 | Cambridge and Oxford Colleges |
| Christopher Andrew Secret Service |
| 1939 | Winterbotham's boss, Menzies |
| Gordon Welchman Hut 6 Story |
| 1939 | Early expansion of GC&CS |
| Patrick Beesly Very Special Intelligenc1939 |
| 1939 | Head of Naval Section at BP, Birch |
| Patrick Beesly Very Special Intelligenc1939 |
| 1939 | Org of BP into sections |
| Patrick Beesly Very Special Intelligenc1939 |
| 1939 | John Tiltman CO No4 Int. School,4IS |
| Codebreakers Henry Dryden |
| 1939 | GC&CS third floor Broadway |
| Codebreakers Henry Dryden |
| 1939 | SIS 2nd and 4th floors Broadway |
| Codebreakers Henry Dryden |
| 1939 | Col Freddie Jacob acting head MS GC&CS |
| Codebreakers Henry Dryden |
| 1939 | Tiltman in India and Hong Kong |
| Codebreakers Henry Dryden |
| 1939 | German Enigma message with Stecker 1938 |
| Codebreakers Peter Twinn |
| 1939 | Pyry Forest meeting July 1939 |
| Codebreakers Peter Twinn |
| 1939 | Peter Twinn worked out wheel wiring |
| Codebreakers Peter Twinn |
| 1939 | First British Cryptograher to read Enigm |
| Codebreakers Peter Twinn |
| 1939 | BP consisted of not more than 30 people |
| Codebreakers Stuart Milner-Barry |
| 1939 | Importance of Welchman to BP development |
| Codebreakers Stuart Milner-Barry |
| 1939 | S M-B recruited Mary Wilson et al |
| Codebreakers Stuart Milner-Barry |
| 1939 | need for more intercept stations |
| Hut 6 Story Gordon Welchman |
| 1939 | Welchman: need for considerable staff |
| Hut 6 Story Gordon Welchman |
| 1939 | Welchman: ability to decode lots of Enig |
| Hut 6 Story Gordon Welchman |
| 1939 | Dilly Knox didn't know abt double mes ky |
| Hut 6 Story Gordon Welchman |
| 1939 | Coloured pencils to mark intercepts |
| Hut 6 Story Gordon Welchman |
| 1939 | wooden Huts constructed by Cpt Faulkner |
| Hut 6 Story Gordon Welchman |
| 1939 | Gordon foresaw Enigma would be broken |
| P S Milner-Barry Memorium for Gordon Wel1939 |
| 1939 | Knowledge of German W/T procedures nill | HW3/
92 | History of Military Section HW3/92 |
| 1939 | Chatham intercepting 5 letter Enigma | HW3/
92 | History of Military Section HW3/92 |
| 1939 | MI8 respnsbl for int of location enmy WT | HW3/
92 | History of Military Section HW3/92 |
| 1939 | Compilation & Records Room CRR @ Chatham | HW3/
92 | History of Military Section HW3/92 |
| 1939 | MI8 & I(a)iv at GHQ BEF to get WT/I | HW3/
92 | History of Military Section HW3/92 |
| 1939 | Pamphlet no 5 Manual of M I 1939 | HW3/
92 | History of Military Section HW3/92 |
| 1939 | attempts to get enemy WT networks failed | HW3/
92 | History of Military Section HW3/92 |
| 1939 | Military Section at GC&CS called IV IS | HW3/
92 | History of Military Section HW3/92 |
| 1939 | Military Section just cryptographic | HW3/
92 | History of Military Section HW3/92 |
| 1939 | Lack of people with W/T research exprnse | HW3/
92 | History of Military Section HW3/92 |
| 1939 | Hut 2 was recreation Hut |
| Interview with Bob Watson 12/11/98 |
| 1939 | Fails to get service hd,Ital&Germ split | HW3/
16 | War 1939-41 by W F Clarke, Hist Naval Se1939 |
| 1939 | NS at BP sent Int Admlty ID8 prefix NSI | HW3/
16 | War 1939-41 by W F Clarke, Hist Naval Se1939 |
| 1939 | NID originally wanted crypt at OIC | HW3/
17 | W Bodsworth answers to Christopher's qus1939 |
| 1939 | Notes on Hist of Military Sectn 1932-40 | HW3/
82 | Notes on Hist of Military Sectn 1932-40 1939 |
| 1939 | We emerged from our shell in the Library | HW3/
146 | Genesis Chap One by Mr E Green (Scrounge1939 |
| 1939 | Hut 4 almost being built round us | HW3/
146 | Genesis Chap One by Mr E Green (Scrounge1939 |
| 1939- | GC&CS increase 4 fold in 16 months |
| Harry Hinsley Vol 1 |
| 1939- | Traffic Analysis & Research Organisation | HW3/
92 | History of Military Section HW3/92 |
| 1939- | Lists of Nos of Staff by year 1939-1945 | HW3/
82 | Strength Returns for Histories HW3/82 |
| 1939- | Sqdn Ldr Hamilton, Y units in France | HW3/
95 | pt 3 of Nigel de Grey's Hist of BP HW3/1939- |
| 1939-1941 | Allegorical early Hist of Naval Sectn | HW3/
146 | Genesis Chap One by Mr E Green (Scrounge1939-1941 |
| 1939-1945 | Non-Morse Interception pgs 807-794 | HW3/
92 | Hist of Military Intelligence 1926-45 H1939-1945 |
| 1939-40 | German cypher method allowed sorting | HW3/
92 | History of Military Section HW3/92 |
| 1939/01 | Dilly still working in Broadway |
| The Knox Bothers Penelopy ? |
| 1939/01 | Denniston's Training Courses for Dons | HW3/
33 | Josh Cooper's Hist of Air Section GC&CS 1939/01 |
| 1939/01 | Cooper stresses importance of Courses | HW3/
33 | Josh Cooper's Hist of Air Section GC&CS 1939/01 |
| 1939/01 | Ellingworth at Chatham, Red key GAF |
| Josh Cooper's Hist of Air Section GC&CS 1939/01 |
| 1939/01 | Admlty basement altered to take NS Int | HW3/
1 | Plans for accomodation at OIC Jan 1939 H1939/01 |
| 1939/01 | accomodation ready March 1939 | HW3/
1 | Plans for accomodation at OIC Jan 1939 H1939/01 |
| 1939/01/12 | Radio silence fr Goerings bthdy 12/01/39 |
| Josh Cooper's Hist of Air Section GC&CS 1939/01/12 |
| 1939/02 | Dryden joined GC&CS Feb 1939 |
| Codebreakers Henry Dryden |
| 1939/02 | Peter Twinn joined GC&CS Feb 1939 |
| Codebreakers Peter Twinn |
| 1939/02 | Peter Twinn recruited Feb 1939 |
| The Knox Bothers Penelopy ? |
| 1939/02 | Moore back BP breaks 3 ltr GAF Air Gnd | HW3/
83 | Memo from Josh Cooper to Travis 1944 HW1939/02 |
| 1939/03 | WO School for Intelligence training |
| Christopher Andrew Secret Service |
| 1939/03 | Aerial photo joint SIS with French |
| Patrick Beesly Very Special Intelligenc1939/03 |
| 1939/03 | Air Sectn party sent to Heliopolis ItAir | HW3/
33 | Josh Cooper's Hist of Air Section GC&CS 1939/03 |
| 1939/03 | Miss Egan and Fischer-Sobell to Heliopol | HW3/
33 | Josh Cooper's Hist of Air Section GC&CS 1939/03 |
| 1939/03 | Hitler annexed Checoslovakia March 1939 |
| Josh Cooper's Hist of Air Section GC&CS 1939/03 |
| 1939/03 | Recruits for Mil Sectn on mobilisation | HW3/
82 | Staff and Establishment of GC&CS 1925-191939/03 |
| 1939/03 | Available emergency staff (A M Turing) | HW3/
82 | Staff and Establishment of GC&CS 1925-191939/03 |
| 1939/05 | friction between Allen & Cooper | HW3/
83 | Memo from Josh Cooper to Travis 1944 HW1939/05 |
| 1939/05/18 | Alarm by radio silence Ascn day 18/05/39 |
| Josh Cooper's Hist of Air Section GC&CS 1939/05/18 |
| 1939/07 | Pyry Forest meeting |
| Christopher Andrew Secret Service |
| 1939/07 | Meeting in Pyry forest |
| Patrick Beesly Very Special Intelligenc1939/07 |
| 1939/07 | Orders to move to BP July 11th 1939 |
| W F Clarke in Cryptologia Oct 1987 |
| 1939/07/25 | Poles told Knox & Denniston Red was GAF | HW3/
33 | Josh Cooper's Hist of Air Section GC&CS 1939/07/25 |
| 1939/08 | Delivery of copy Enigma |
| Christopher Andrew Secret Service |
| 1939/08 | Polish Enigmas delivered to BP |
| Patrick Beesly Very Special Intelligenc1939/08 |
| 1939/08 | Naval sectn 24 on move to BP Aug 1939 |
| W F Clarke Bletchley Park 1941-45 Crypto1939/08 |
| 1939/08 | Chatham taking Enigma "main discriminant | HW14
/4 | Hut 6 memo poss Gordon Welchman HW14/4 |
| 1939/08 | GC&CS & SIS all back at BP | HW3/
33 | Josh Cooper's Hist of Air Section GC&CS 1939/08 |
| 1939/08 | Cooper thinks some Huts already built | HW3/
33 | Josh Cooper's Hist of Air Section GC&CS 1939/08 |
| 1939/08 | 1st People at BP put into hotels | HW3/
33 | Josh Cooper's Hist of Air Section GC&CS 1939/08 |
| 1939/08 | Cpt Ridley in charge of Admin | HW3/
33 | Josh Cooper's Hist of Air Section GC&CS 1939/08 |
| 1939/08 | Nice description of BP | Hw3/
95 | Nigel de Grey Sitz & Blitz Hist of BP 1939/08 |
| 1939/08 | Close to main N/S GPO cable Fenny Stratf | Hw3/
95 | Nigel de Grey Sitz & Blitz Hist of BP 1939/08 |
| 1939/08 | top floor SIS gnd floor GC&CS | HW3/
95 | Nigel de Grey Sitz & Blitz Hist of BP 1939/08 |
| 1939/08 | Air, Nav Mil Tel Excng & Teleprints Gndf | HW3/
95 | Nigel de Grey Sitz & Blitz Hist of BP 1939/08 |
| 1939/08 | Kitchen & dining room for whole staff | HW3/
95 | Nigel de Grey Sitz & Blitz Hist of BP 1939/08 |
| 1939/08 | Air Sect large rm on right in door | HW3/
95 | Nigel de Grey Sitz & Blitz Hist of BP 1939/08 |
| 1939/08 | Air Sectn Cooper,Moore,Fetterlein,Hooper | HW3/
95 | Nigel de Grey Sitz & Blitz Hist of BP 1939/08 |
| 1939/08 | Barbara Abernethy came with NS to BP0839 |
| Interview with Barbara Eachus(Abernethy)1939/08 |
| 1939/08 | Naval Section GC&CS went into Garden rm |
| Interview with Barbara Eachus(Abernethy)1939/08 |
| 1939/08 | Huts 1,2,3,4 outer shells by August 1939 |
| Interview with Bob Watson 12/11/98 |
| 1939/08 | MS in Leon's Dining rm then Hut 5 |
| Interview with Bob Watson 12/11/98 |
| 1939/08 | Mansion library partitioned |
| Interview with Bob Watson 12/11/98 |
| 1939/08/01 | service sections ordered to war stations |
| A G Denniston GC&CS between the wars |
| 1939/08/15 | Diplomatic & commercial sections arrived |
| A G Denniston GC&CS between the wars |
| 1939/08/15 | re-occupation of BP by service sectns |
| Codebreakers Henry Dryden |
| 1939/08/15 | List of 71 GC&CS staff to BP Aug 39 | HW3/
1 | Test of War Site Comms by AGD 15th Aug 11939/08/15 |
| 1939/08/15 | OC Travis,NS Clarke,MS Tiltman,AS Cooper | HW3/
1 | Test of War Site Comms by AGD 15th Aug 11939/08/15 |
| 1939/08/15 | Research Section Head Knox | HW3/
1 | Test of War Site Comms by AGD 15th Aug 11939/08/15 |
| 1939/08/15 | Commercial & Diplomatic Travis | HW3/
1 | Test of War Site Comms by AGD 15th Aug 11939/08/15 |
| 1939/08/15 | War Stn to be manned from 15th Aug | HW3/
1 | Test of War Site Comms by AGD 15th Aug 11939/08/15 |
| 1939/08/15 | Combined Navy RAF exercises 15th/21stAug | HW3/
1 | Test of War Site Comms by AGD 15th Aug 11939/08/15 |
| 1939/08/15 | Accomodation and allowances for BP move | HW3/
1 | Test of War Site Comms by AGD 15th Aug 11939/08/15 |
| 1939/08/15 | Billeting list for move to BP pgs738-726 | HW3/
1 | Test of War Site Comms by AGD 15th Aug 11939/08/15 |
| 1939/08/31 | Germany unvades Poland 31 Aug 1939 | HW3/
33 | Josh Cooper's Hist of Air Section GC&CS 1939/08/31 |
| 1939/09 | GC&CS established in BP |
| Nigel West MI6 |
| 1939/09 | Whitehall directors agree crypt at GC&CS |
| Harry Hinsley Vol 1 |
| 1939/09 | In Argentina with Alexander and Golombek |
| Codebreakers Stuart Milner-Barry |
| 1939/09 | Welchman's first assistant, Pat Newman |
| Hut 6 Story Gordon Welchman |
| 1939/09 | In Elmers School plus Peggy Taylor |
| Hut 6 Story Gordon Welchman |
| 1939/09 | Start of traffic analysis Welchman |
| Hut 6 Story Gordon Welchman |
| 1939/09 | Kendrick and Welchman on Enigma traffic |
| Hut 6 Story Gordon Welchman |
| 1939/09 | First Enigma decodes from Josh Cooper |
| Hut 6 Story Gordon Welchman |
| 1939/09 | Sent to Elmers School with Kendrick |
| Hut 6 Story Gordon Welchman |
| 1939/09 | Tiltman in charge of Army Ops at BP |
| Hut 6 Story Gordon Welchman |
| 1939/09 | Army intercept at Chatham |
| Hut 6 Story Gordon Welchman |
| 1939/09 | Welchman sent to join Knox and Turing |
| Hut 6 Story Gordon Welchman |
| 1939/09 | Knox, Turing and Jeffreys in Cottage |
| Hut 6 Story Gordon Welchman |
| 1939/09 | about 10 people in the Cottage |
| Hut 6 Story Gordon Welchman |
| 1939/09 | indoctrination in London Oliver Strachey |
| Hut 6 Story Gordon Welchman |
| 1939/09 | Profs Boase and Last joined Ital Air Sec | HW3/
33 | Josh Cooper's Hist of Air Section GC&CS 1939/09 |
| 1939/09 | Allen moved from A M Int | HW3/
83 | Memo from Josh Cooper to Travis 1944 HW1939/09 |
| 1939/09 | Cooper for Buss relations def with A I | HW3/
83 | Memo from Josh Cooper to Travis 1944 HW1939/09 |
| 1939/09 | Director of Air Signals Air Cmdr Nutting | HW3/
83 | Memo from Josh Cooper to Travis 1944 HW1939/09 |
| 1939/09 | House too small Elmers School acqd | HW3/
95 | Nigel de Grey Sitz & Blitz Hist of BP 1939/09 |
| 1939/09 | Commercial, Diplo and some Enig in Elmer | HW3/
95 | Nigel de Grey Sitz & Blitz Hist of BP 1939/09 |
| 1939/09 | 6 small GAF codes solved but no vocab | HW3/
95 | Nigel de Grey Sitz & Blitz Hist of BP 1939/09 |
| 1939/09 | Blandy recalled to take charge of Air Y | HW3/
95 | Nigel de Grey Sitz & Blitz Hist of BP 1939/09 |
| 1939/09 | Blandy asked Swanborough to define Y | HW3/
95 | Nigel de Grey Sitz & Blitz Hist of BP 1939/09 |
| 1939/09 | List of Y outputs by Swanborough | HW3/
95 | Nigel de Grey Sitz & Blitz Hist of BP 1939/09 |
| 1939/09 | Preperation for attack on Enigma, Knox | HW3/
95 | Nigel de Grey Sitz & Blitz Hist of BP 1939/09 |
| 1939/09 | 186 staff in GC&CS 49 in Construction | HW3/
82 | History Notes HW3/82 |
| 1939/09 | of 137 GC&CS proper, 131 civis 6 Officer | HW3/
82 | History Notes HW3/82 |
| 1939/09 | Each Servc respnsbl for Intcpt enemy eqv | HW3/
92 | Hist of Military Intelligence 1926-45 H1939/09 |
| 1939/09 | GC&CS did crypto work for each Service | HW3/
92 | Hist of Military Intelligence 1926-45 H1939/09 |
| 1939/09 | Servcs provided staff for GC&CS and ownI | HW3/
92 | Hist of Military Intelligence 1926-45 H1939/09 |
| 1939/09 | Coord W/T Int, the Main Cttee,inter serv | HW3/
92 | Hist of Military Intelligence 1926-45 H1939/09 |
| 1939/09 | Y Ctte inter-service | HW3/
92 | Hist of Military Intelligence 1926-45 H1939/09 |
| 1939/09 | MI8 took over MI1(b) Sept 1939 | HW3/
92 | Hist of Military Intelligence 1926-45 H1939/09 |
| 1939/09 | Knowledge of Germ Mil W/T methods nil | HW3/
92 | Hist of Military Intelligence 1926-45 H1939/09 |
| 1939/09 | Chatham intcptg E 5 ltr known as "Milita | HW3/
92 | Hist of Military Intelligence 1926-45 H1939/09 |
| 1939/09 | Same freq day to day different discrims | HW3/
92 | Hist of Military Intelligence 1926-45 H1939/09 |
| 1939/09 | Two groups identified Red & Green pencil | HW3/
92 | Hist of Military Intelligence 1926-45 H1939/09 |
| 1939/09 | operator only took wanted discrims | HW3/
92 | Hist of Military Intelligence 1926-45 H1939/09 |
| 1939/09 | MI8 responbl Int of location, moves W/T | HW3/
92 | Hist of Military Intelligence 1926-45 H1939/09 |
| 1939/09 | D/F from Montrose,Helston,Sutton Valence | HW3/
92 | Hist of Military Intelligence 1926-45 H1939/09 |
| 1939/09 | MI8 staff at I(a)iv BEF to prod W/TI | HW3/
92 | Hist of Military Intelligence 1926-45 H1939/09 |
| 1939/09 | Attempts at Germ W/T diags and Locs fail | HW3/
92 | Hist of Military Intelligence 1926-45 H1939/09 |
| 1939/09/03 | 3rd Sep 39 Germans & Russians enciph Met | HW3/
95 | Nigel de Grey Sitz & Blitz Hist of BP 1939/09/03 |
| 1939/09/03 | MI8(a) W/T I, Y Int, Y training schools | HW3/
92 | Hist of Military Intelligence 1926-45 H1939/09/03 |
| 1939/09/03 | MI8(b) Sig Security and Equip,Foregn Eqp | HW3/
92 | Hist of Military Intelligence 1926-45 H1939/09/03 |
| 1939/09/03 | MI8(c) Illicit Wireless Intcpt | HW3/
92 | Hist of Military Intelligence 1926-45 H1939/09/03 |
| 1939/09/05 | Frank Birch takes over Germ sectn of NS | HW3/
16 | War 1939-41 by W F Clarke, Hist Naval Se1939/09/05 |
| 1939/09/12 | Denniston & Travis Memo to Menzies 09/39 | HW14
/1 | Memo Denniston to Memzies re staff at BP1939/09/12 |
| 1939/09/12 | Asking for equal treatment GC&CS and SIS | HW14
/1 | Memo Denniston to Memzies re staff at BP1939/09/12 |
| 1939/09/12 | Official cars for SIS and not GC&CS | HW14
/1 | Memo Denniston to Memzies re staff at BP1939/09/12 |
| 1939/09/12 | Discontent growing in GC&CS | HW14
/1 | Memo Denniston to Memzies re staff at BP1939/09/12 |
| 1939/09/12 | very soon able to contribute Int to Serv | HW14
/1 | Memo Denniston to Memzies re staff at BP1939/09/12 |
| 1939/09/12 | Cooperation between 3 Service Sectns Ess | HW14
/1 | Memo Denniston to Memzies re staff at BP1939/09/12 |
| 1939/09/12 | concern at move of Mil Sectn to garden | HW14
/1 | Memo Denniston to Memzies re staff at BP1939/09/12 |
| 1939/09/12 | Sectn on Machine problem in No 3 Cottage | HW14
/1 | Memo Denniston to Memzies re staff at BP1939/09/12 |
| 1939/09/12 | Diplo & Commerc Sectns in Elmers School | HW14
/1 | Memo Denniston to Memzies re staff at BP1939/09/12 |
| 1939/09/12 | Not room to house SIS & GC&CS in BP | HW14
/1 | Memo Denniston to Memzies re staff at BP1939/09/12 |
| 1939/09/12 | Only solution is to seperate | HW14
/1 | Memo Denniston to Memzies re staff at BP1939/09/12 |
| 1939/09/14 | Does not want more Huts in BP | HW14
/1 | Memo from "C" to Menzies,Howard & Dennis1939/09/14 |
| 1939/09/14 | Suggests Diplo & Commerc return to Bdway | HW14
/1 | Memo from "C" to Menzies,Howard & Dennis1939/09/14 |
| 1939/09/15 | Sinclair consulted Major Morton at DNI | HW14
/1 | "C" to Menzies & Denniston HW14/1 |
| 1939/09/15 | Commerc Section of GC&CS need more staff | HW14
/1 | "C" to Menzies & Denniston HW14/1 |
| 1939/09/15 | Can't be accom at BP so must return Bdwa | HW14
/1 | "C" to Menzies & Denniston HW14/1 |
| 1939/09/16 | Denniston asks whole GC&CS stay at BP | HW14
/1 | Memo Denniston to "C" 16/09/39 hand repl1939/09/16 |
| 1939/09/16 | Whole GC&CS inc Commerc Sectn stay in BP | HW14
/1 | Memo Denniston to "C" 16/09/39 hand repl1939/09/16 |
| 1939/09/16 | Commerc sectn to move to Elmers School | HW14
/1 | Memo Denniston to "C" 16/09/39 hand repl1939/09/16 |
| 1939/09/16 | More Huts to erected for Service Sectns | HW14
/1 | Memo Denniston to "C" 16/09/39 hand repl1939/09/16 |
| 1939/09/16 | Huts to be connected by pneumatic tube | HW14
/1 | Memo Denniston to "C" 16/09/39 hand repl1939/09/16 |
| 1939/09/17 | "C" decides whole GC&CS to stay at BP | HW14
/1 | Memo Denniston to "C" 16/09/39 hand repl1939/09/17 |
| 1939/09/17 | 3 Huts to be erected for Forces Sectns | HW14
/1 | Memo Denniston to "C" 16/09/39 hand repl1939/09/17 |
| 1939/09/17 | Huts to be fitted with pneumatic tubes | HW14
/1 | Memo Denniston to "C" 16/09/39 hand repl1939/09/17 |
| 1939/09/27 | Warsaw fell 27th Sept 1939 | HW3/
95 | Nigel de Grey Sitz & Blitz Hist of BP 1939/09/27 |
| 1939/09/29 | Commerc Sectn has been in Elmers 10 days | HW14
/1 | Denniston Memo 29/09/39 HW14/1 |
| 1939/09/29 | Huts now under construction for Serv Sec | HW14
/1 | Denniston Memo 29/09/39 HW14/1 |
| 1939/09/29 | Extra space being cleared in Elmers | HW14
/1 | Denniston Memo 29/09/39 HW14/1 |
| 1939/09/29 | costs of duplicating Netz for French | HW14
/1 | Knox to Denniston re Anglo-French E Liai1939/09/29 |
| 1939/09/29 | costs of wood for copies of rods | HW14
/1 | Knox to Denniston re Anglo-French E Liai1939/09/29 |
| 1939/09/29 | costs of "sex-statistics"? | HW14
/1 | Knox to Denniston re Anglo-French E Liai1939/09/29 |
| 1939/09/29 | Knox's "new machine"? Travis & H.-M? imp | HW14
/1 | Knox to Denniston re Anglo-French E Liai1939/09/29 |
| 1939/10 | Winterbotham retn Broadway |
| R.V.Jones |
| 1939/10 | Air Section under Winterbotham |
| R.V.Jones |
| 1939/10 | Tiltman and Josh Cooper interested |
| Hut 6 Story Gordon Welchman |
| 1939/10 | Waiting for Jeffreys sheets | HW14
/4 | Hut 6 memo poss Gordon Welchman HW14/4 |
| 1939/10 | Blandy D of Sig Y, AI1(c) and Air GC&CS | HW3/
33 | Josh Cooper's Hist of Air Section GC&CS 1939/10 |
| 1939/10 | Prof Adcock & Miss Welsford jnd Germ Air | HW3/
33 | Josh Cooper's Hist of Air Section GC&CS 1939/10 |
| 1939/10 | Blandy appointed to control A M Sig Int | HW3/
83 | Memo from Josh Cooper to Travis 1944 HW1939/10 |
| 1939/10 | Sqd Ldr Moore jned by Adcock,Ms Welsford | HW3/
95 | Nigel de Grey Sitz & Blitz Hist of BP 1939/10 |
| 1939/10 | Worries that Germans may have changed E | HW3/
95 | Nigel de Grey Sitz & Blitz Hist of BP 1939/10 |
| 1939/10 | difficulties with staff relative pay | HW14
/1 | Memo Knox to Denniston re staff HW14/1939/10 |
| 1939/10 | Kendrick quite admirable | HW14
/1 | Memo Knox to Denniston re staff HW14/1939/10 |
| 1939/10 | Welchman doing well and is keen | HW14
/1 | Memo Knox to Denniston re staff HW14/1939/10 |
| 1939/10 | Twinn still very keen and hard working | HW14
/1 | Memo Knox to Denniston re staff HW14/1939/10 |
| 1939/10 | Jeffreys extreemly sound good statistics | HW14
/1 | Memo Knox to Denniston re staff HW14/1939/10 |
| 1939/10 | Turing is very difficult,clever impossib | HW14
/1 | Memo Knox to Denniston re staff HW14/1939/10 |
| 1939/10 | Tiltman & Knox quite at peace | HW14
/1 | Memo Knox to Denniston re staff HW14/1939/10 |
| 1939/10 | Cooper Knox didnt understand him and v v | HW14
/1 | Memo Knox to Denniston re staff HW14/1939/10 |
| 1939/10 | Frank Birch does more work than others | HW14
/1 | Memo Knox to Denniston re staff HW14/1939/10 |
| 1939/10 | Knox:problems betwn Frank,Saunders&crypt | HW14
/1 | Memo Knox to Denniston re staff HW14/1939/10 |
| 1939/10 | Kendrick,Edgar not close to Ellingworth | HW14
/1 | Memo Knox to Denniston re staff HW14/1939/10 |
| 1939/10 | Naval Section moved to Hut4 when ready |
| Interview with Barbara Eachus(Abernethy)1939/10 |
| 1939/10 | Barbara Abernethy joined Admin,Bradshaw |
| Interview with Barbara Eachus(Abernethy)1939/10 |
| 1939/10/14 | Denniston agrees to Knox small workshop | HW14
/1 | Knox to Travis? request to start worksh1939/10/14 |
| 1939/10/21 | Cover letter fm Sandwith-Denniston re Y | HW14
/1 | Sandwith-Denniston re new Navy Y HW11939/10/21 |
| 1939/10/21 | reports failed to get new Y station appv | HW14
/1 | Sandwith-Denniston re new Navy Y HW11939/10/21 |
| 1939/10/21 | GC&CS wants new Y stn not Extn Scarboro | HW14
/1 | Sandwith-Denniston re new Navy Y HW11939/10/21 |
| 1939/10/21 | Post Office concened lines all thr Leeds | HW14
/1 | Sandwith-Denniston re new Navy Y HW11939/10/21 |
| 1939/10/27 | Denniston to Saunders: all crypt at GC&C | HW14
/1 | Memo Denniston to Saunders 27th Oct 19391939/10/27 |
| 1939/10/27 | ID8G serve OIC under Clayton as IOs usgY | HW14
/1 | Memo Denniston to Saunders 27th Oct 19391939/10/27 |
| 1939/10/27 | Complaint abt GAF code part lost Scapa F | HW14
/1 | Memo Denniston to Saunders 27th Oct 19391939/10/27 |
| 1939/11 | Sinclair replaced by Menzies |
| Patrick Beesly Very Special Intelligenc1939/11 |
| 1939/11 | 400 on Main 200 on U E messages per day | HW3/
95 | Nigel de Grey's Hist of BP HW3/95 |
| 1939/11 | field Y units should get medium Wave E | HW3/
95 | Nigel de Grey's Hist of BP HW3/95 |
| 1939/11 | beginnings of traffic register | HW3/
95 | Nigel de Grey's Hist of BP HW3/95 |
| 1939/11 | Gp Cpt Blandy asked to be ready to takeE | HW3/
95 | Nigel de Grey's Hist of BP HW3/95 |
| 1939/11 | Col Butler asked to concentrate on GAF E | HW3/
95 | Nigel de Grey's Hist of BP HW3/95 |
| 1939/11 | Fetterlein jned Nov when books captured | HW3/
95 | Nigel de Grey Sitz & Blitz Hist of BP 1939/11 |
| 1939/11 | books and map grid from crashed GAF plan | HW3/
95 | Nigel de Grey Sitz & Blitz Hist of BP 1939/11 |
| 1939/11/01 | Plain catalogue complete & punched | HW14
/2 | Knox,Twinn,Welchman,Turing,Jeffreys re E1939/11/01 |
| 1939/11/01 | catalogue will be duplicated for French | HW14
/2 | Knox,Twinn,Welchman,Turing,Jeffreys re E1939/11/01 |
| 1939/11/01 | Have 2 Punches, 2 more on order | HW14
/2 | Knox,Twinn,Welchman,Turing,Jeffreys re E1939/11/01 |
| 1939/11/01 | 30 Enigma Bombe for cribs on order BTM | HW14
/2 | Knox,Twinn,Welchman,Turing,Jeffreys re E1939/11/01 |
| 1939/11/01 | Knox,Twinn,Welchman,Jeffreys memo to Den | HW14
/2 | Knox,Twinn,Welchman,Turing,Jeffreys re E1939/11/01 |
| 1939/11/01 | Recent inc in GAF HF on Main Discrimntr | HW14
/2 | Knox,Twinn,Welchman,Turing,Jeffreys re E1939/11/01 |
| 1939/11/01 | With more traffic poss break wth 4 E Bmb | HW14
/2 | Knox,Twinn,Welchman,Turing,Jeffreys re E1939/11/01 |
| 1939/11/01 | Naval E could be solved by 30 E Bombe | HW14
/2 | Knox,Twinn,Welchman,Turing,Jeffreys re E1939/11/01 |
| 1939/11/01 | If steckers known "rack" could solve E | HW14
/2 | Knox,Twinn,Welchman,Turing,Jeffreys re E1939/11/01 |
| 1939/11/01 | "Rack" machine to count ltr "E" frequenc | HW14
/2 | Knox,Twinn,Welchman,Turing,Jeffreys re E1939/11/01 |
| 1939/11/01 | 200 decodes per day would give bigrams | HW14
/2 | Knox,Twinn,Welchman,Turing,Jeffreys re E1939/11/01 |
| 1939/11/04 | ref Y Subctte mins of 24th Oct 39 | HW14
/2 | Denniston?-Blandy re Y resources for E 1939/11/04 |
| 1939/11/04 | Chatham to take less Main Disc E | HW14
/2 | Denniston?-Blandy re Y resources for E 1939/11/04 |
| 1939/11/04 | Rsrch Sectn cd break Main with new equip | HW14
/2 | Denniston?-Blandy re Y resources for E 1939/11/04 |
| 1939/11/04 | After Xmas cd need much more E Intcpt | HW14
/2 | Denniston?-Blandy re Y resources for E 1939/11/04 |
| 1939/11/04 | Concern that Chatham might not rtn to E | HW14
/2 | Denniston?-Blandy re Y resources for E 1939/11/04 |
| 1939/11/04 | RAF might have to suddenly take over E | HW14
/2 | Denniston?-Blandy re Y resources for E 1939/11/04 |
| 1939/11/04 | Scarboro Y vital:needs standby stn | HW14
/1 | Sandwith-Denniston re new Navy Y HW11939/11/04 |
| 1939/11/04 | Despite this extra bldgs Scarboro apprvd | HW14
/1 | Sandwith-Denniston re new Navy Y HW11939/11/04 |
| 1939/11/05 | Travis investigating Major Bombe machine | HW14
/2 | Travis to Denniston re Bombes and Enigma1939/11/05 |
| 1939/11/05 | wants to know time to construct Minor Bm | HW14
/2 | Travis to Denniston re Bombes and Enigma1939/11/05 |
| 1939/11/05 | need more Enigmas if intc becomes readbl | HW14
/2 | Travis to Denniston re Bombes and Enigma1939/11/05 |
| 1939/11/05 | need 2 Minor Bombes,2 Racks,4 Enigmas | HW14
/2 | Travis to Denniston re Bombes and Enigma1939/11/05 |
| 1939/11/07 | Enigma used universally,Army & GAF | HW14
/2 | Progress Rpt on German Mil Cyphers HW11939/11/07 |
| 1939/11/07 | 3 ltr codes used Air Ground read by AirS | HW14
/2 | Progress Rpt on German Mil Cyphers HW11939/11/07 |
| 1939/11/07 | Air E providing most traffic | HW14
/2 | Progress Rpt on German Mil Cyphers HW11939/11/07 |
| 1939/11/18 | need to seperate Research from Productio | hw14
/2 | memo Travis to Denniston re E exploitati1939/11/18 |
| 1939/11/18 | Research Knox,Kendrick,Turing,MissNugent | hw14
/2 | memo Travis to Denniston re E exploitati1939/11/18 |
| 1939/11/18 | Productn Welchman,Twinn,Jeffreys,Dawson | hw14
/2 | memo Travis to Denniston re E exploitati1939/11/18 |
| 1939/11/18 | New Hut required for production | hw14
/2 | memo Travis to Denniston re E exploitati1939/11/18 |
| 1939/11/18 | Bombe machines to be run by Dawson | hw14
/2 | memo Travis to Denniston re E exploitati1939/11/18 |
| 1939/11/18 | Layout of E production Hut (?6) | HW14
/2 | memo Travis to Denniston re E exploitati1939/11/18 |
| 1939/11/18 | study of all Germ WT logs Chatham verygd | HW14
/2 | letter from Ellingworth to MI8 re E reg 1939/11/18 |
| 1939/11/18 | need someone else to do E reg at Chatham | HW14
/2 | letter from Ellingworth to MI8 re E reg 1939/11/18 |
| 1939/11/18 | could 4IS help with E registration | HW14
/2 | letter from Ellingworth to MI8 re E reg 1939/11/18 |
| 1939/11/20 | pgs 633-629 further description of 5ltrE | HW14
/2 | note on 5 ltr E with repeat 3 ltr Indica1939/11/20 |
| 1939/11/24 | Denniston:GC&CS will do registration E | HW14
/2 | Denniston to Butler re E registration HW1939/11/24 |
| 1939/11/24 | GC&CS to send party to Chatham to reg E | HW14
/2 | Denniston to Butler re E registration HW1939/11/24 |
| 1939/11/28 | 2 large groups, Main & U Systems 5 ltr E | HW14
/2 | note on 5 ltr E with repeat 3 ltr Indica1939/11/28 |
| 1939/11/28 | U System uses Med Frq low power | HW14
/2 | note on 5 ltr E with repeat 3 ltr Indica1939/11/28 |
| 1939/11/28 | U System heard in France, not at Chatham | HW14
/2 | note on 5 ltr E with repeat 3 ltr Indica1939/11/28 |
| 1939/11/28 | 700 messgs/day 400 Main,200 U,100 others | HW14
/2 | note on 5 ltr E with repeat 3 ltr Indica1939/11/28 |
| 1939/11/28 | Chatham not allowed to concentrate on E | HW14
/2 | note on 5 ltr E with repeat 3 ltr Indica1939/11/28 |
| 1939/11/28 | Detailed description of Main and U E | HW14
/2 | note on 5 ltr E with repeat 3 ltr Indica1939/11/28 |
| 1939/12 | Colman in charge of Intercept Control Rm |
| Hut 6 Story Gordon Welchman |
| 1939/12 | First org plan for Enigma attack |
| Hut 6 Story Gordon Welchman |
| 1939/12 | support from Travis,Tiltman and Cooper |
| Hut 6 Story Gordon Welchman |
| 1939/12 | Decision to move Exploitation to Hut 6 | HW3/
95 | Nigel de Grey's Hist of BP HW3/95 |
| 1939/12 | Army operators and TAs did charting ntwk | HW3/
33 | Josh Cooper's Hist of Air Section GC&CS 1939/12 |
| 1939/12 | Air sectn youngest and smallest in GC&CS | HW3/
33 | Josh Cooper's Hist of Air Section GC&CS 1939/12 |
| 1939/12 | No pneumatic tubs in BP, balls in gutter | HW3/
33 | Josh Cooper's Hist of Air Section GC&CS 1939/12 |
| 1939/12 | Plight of Air Sectn Desperate Dec 1939 | HW3/
33 | Josh Cooper's Hist of Air Section GC&CS 1939/12 |
| 1939/12 | Blandy asks Cooper for staff position | HW3/
95 | Nigel de Grey Sitz & Blitz Hist of BP 1939/12 |
| 1939/12 | Blandy asks Cooper for staff position | HW3/
95 | Nigel de Grey Sitz & Blitz Hist of BP 1939/12 |
| 1939/12 | The Netz. millionth hole Dec 1939 | HW3/
95 | Nigel de Grey Sitz & Blitz Hist of BP 1939/12 |
| 1939/12 | First Bombe ordered by Travis Dec 1939 | HW3/
95 | Nigel de Grey Sitz & Blitz Hist of BP 1939/12 |
| 1939/12 | Prod Order for Bombes with BTM | HW3/
95 | Nigel de Grey Sitz & Blitz Hist of BP 1939/12 |
| 1939/12 | T/O pos for wheels 4 & 5 not correct | HW3/
95 | Nigel de Grey Sitz & Blitz Hist of BP 1939/12 |
| 1939/12 | 1st break in Paris of 28/10/39 traffic | HW3/
95 | Nigel de Grey Sitz & Blitz Hist of BP 1939/12 |
| 1939/12 | Knox told he could not run Huts 6 & 8 | HW14
/22 | Denniston to Dilly Knox HW14/22 |
| 1939/12/18 | Bertrand could give info abt MF E | HW14
/2 | Proposal to use French Intercpts for TA 1939/12/18 |
| 1939/12/27 | Cooper's staff position & requirements | HW3/
95 | Nigel de Grey Sitz & Blitz Hist of BP 1939/12/27 |
| 1939/12/27 | Cooper's staff position & requirements | HW3/
95 | Nigel de Grey Sitz & Blitz Hist of BP 1939/12/27 |
| 1939/12/27 | establishment for GC&CS Air Section | HW14
/2 | memo Cooper to Blandy re estab GC&CS Air1939/12/27 |
| 1939/12/27 | pgs 640-635 detail establishment for Air | HW14
/2 | memo Cooper to Blandy re estab GC&CS Air1939/12/27 |
| 1939/12/31 | Establishment of CG&CS Air Sectn Dec 39 | HW14
/2 | Denniston->Blandy re Establisment Air GC1939/12/31 |
| 1940 | First decrypts to Air Section |
| R.V.Jones |
| 1940 | Italian Army code in Hut 5 |
| P.W.Filby Floradora paper |
| 1940 | Wireless Board set up |
| Christopher Andrew Secret Service |
| 1940 | First exec head of SOE Sir Frank Nelson |
| Christopher Andrew Secret Service |
| 1940 | British Security Coordination BSC in USA |
| Christopher Andrew Secret Service |
| 1940 | Head of OSS Colonel Donovan |
| Christopher Andrew Secret Service |
| 1940 | MI1x set up for recruitment |
| Christopher Andrew Secret Service |
| 1940 | First commander Brigadier Jeffries |
| Christopher Andrew Secret Service |
| 1940 | List of MI5 recruits |
| Christopher Andrew Secret Service |
| 1940 | first intelligence analysis |
| Gordon Welchman Hut 6 Story |
| 1940 | Head Saunders plus F L Lucas & H Knight |
| Gordon Welchman Hut 6 Story |
| 1940 | Turing and the Bombe |
| Patrick Beesly Very Special Intelligenc1940 |
| 1940 | Admiralty was an operational HQ |
| Patrick Beesly Very Special Intelligenc1940 |
| 1940 | Saunders section and BP |
| Patrick Beesly Very Special Intelligenc1940 |
| 1940 | Internment of Germans in UK |
| Patrick Beesly Very Special Intelligenc1940 |
| 1940 | MI5 badly organised under Kell |
| Patrick Beesly Very Special Intelligenc1940 |
| 1940 | Chart of Org Directorate of MI 1940 |
| Patrick Beesly Very Special Intelligenc1940 |
| 1940 | In first 16 months GC&CS expanded x 4 |
| Patrick Beesly Very Special Intelligenc1940 |
| 1940 | First reports from 'Boniface' not belevd |
| Patrick Beesly Very Special Intelligenc1940 |
| 1940 | SIS bids for SOE |
| Patrick Beesly Very Special Intelligenc1940 |
| 1940 | OIC relied on GC&CS Naval sectn research |
| Harry Hinsley Vol 1 |
| 1940 | DNI added NID17 to scrutinise non Ad. I |
| Harry Hinsley Vol 1 |
| 1940 | MI8 undertook TA on GAF |
| Harry Hinsley Vol 1 |
| 1940 | No TA by GC&CS Army Section |
| Harry Hinsley Vol 1 |
| 1940 | MI and AI had TA teams at GC&CS |
| Harry Hinsley Vol 1 |
| 1940 | AI benefited from Enigma breaks |
| Harry Hinsley Vol 1 |
| 1940 | Steady collaboration AI GC&CS |
| Harry Hinsley Vol 1 |
| 1940 | WO saddled with interception of Enigma |
| Harry Hinsley Vol 1 |
| 1940 | MI8 centre for Army TA |
| Harry Hinsley Vol 1 |
| 1940 | Y Committee given Chair and two secretas |
| Harry Hinsley Vol 1 |
| 1940 | GC&CS v Int Dirs changing |
| Harry Hinsley Vol 1 |
| 1940 | conflict with GC&CS on control of crypt |
| Harry Hinsley Vol 1 |
| 1940 | North Sea German weather rec flights |
| Codebreakers Peter Lucas |
| 1940 | intelligence should be with those use it |
| Codebreakers Peter Lucas |
| 1940 | all codebreaking should be at GC&CS |
| Codebreakers Peter Lucas |
| 1940 | devolved to Cheadle |
| Codebreakers Peter Lucas |
| 1940 | three figure Italian AF system |
| Codebreakers Henry Dryden |
| 1940 | German Railway Enigma |
| Codebreakers Henry Dryden |
| 1940 | Banburismus |
| Codebreakers Joan Murray ne Clark |
| 1940 | Norman an original member of Hut 3 watch |
| Codebreakers Edward Thomas |
| 1940 | original Hut 3 watch set up by Welchman |
| Codebreakers Edward Thomas |
| 1940 | Winterbotham did not "set up Hut 3 watch |
| Codebreakers Edward Thomas |
| 1940 | original watch headed by Commdr Saunders |
| Codebreakers Edward Thomas |
| 1940 | orig watch Saunders,Norman,LucasMarchant |
| Codebreakers Edward Thomas |
| 1940 | Hut 3 part of GC&CS |
| Codebreakers William Millward |
| 1940 | start of Enigma Int analysis |
| Hut 6 Story Gordon Welchman |
| 1940 | FO Int group tiny Hut 3 head Saunders |
| Hut 6 Story Gordon Welchman |
| 1940 | First Hut 3 Saunders, Lucas, Knight |
| Hut 6 Story Gordon Welchman |
| 1940 | June Canney Welchman's secretary |
| Hut 6 Story Gordon Welchman |
| 1940 | Hugh Alexander joined |
| Hut 6 Story Gordon Welchman |
| 1940 | Early recruitment to Hut 6 |
| Hut 6 Story Gordon Welchman |
| 1940 | Bodsworth Head of German Naval |
| W F Clarke Bletchley Park 1941-45 Crypto1940 |
| 1940 | Gordon's gift for planning and org |
| P S Milner-Barry Memorium for Gordon Wel1940 |
| 1940 | Col Butler merging of decode & D/F | HW3/
92 | History of Military Section HW3/92 |
| 1940 | Special Liaison Party SLP adjunct to H 3 | HW3/
92 | History of Military Section HW3/92 |
| 1940 | Welchman wanted to control Chatham intcp | HW3/
92 | History of Military Section HW3/92 |
| 1940 | Dir GC&CS and "C" wanted to keep E secrt | HW3/
92 | History of Military Section HW3/92 |
| 1940 | MI8 Colonel resp for Intercept & WT/I | HW3/
92 | History of Military Section HW3/92 |
| 1940 | W/T I section of MI8 at 3 Cork Street | HW3/
95 | Nigel de Grey's Hist of BP HW3/95 |
| 1940 | Cpt Bolitho attempts to discvr G call sg | HW3/
95 | Nigel de Grey's Hist of BP HW3/95 |
| 1940 | GAF MF/HFLnk eventually dscvd in 1940 | HW3/
33 | Josh Cooper's Hist of Air Section GC&CS 1940 |
| 1940 | Maggs at A M expert on OrdOBat | HW3/
83 | Memo from Josh Cooper to Travis 1944 HW1940 |
| 1940 | Still seperation of TA and decrypt | HW3/
95 | Nigel de Grey Sitz & Blitz Hist of BP 1940 |
| 1940 | Hut 3 4 6 and 8 evacuate to Wavenden | HW14
/6 | Emergency procedures for BP evacuation H1940 |
| 1940 | Room numbers same as in 1940 |
| Upper floor plan of the Mansion |
| 1940 | Huts 6,7,8 started 1940 Hut 7 outsid fnc |
| Interview with Bob Watson 12/11/98 |
| 1940 | Frank Birch got all crypt back to BP | HW3/
17 | W Bodsworth answers to Christopher's qus1940 |
| 1940 | difficulties in protecting "source" | HW3/
95 | pt 3 of Nigel de Grey's Hist of BP HW3/1940 |
| 1940 | Y intercept prblms not understood at top | HW3/
95 | pt 3 of Nigel de Grey's Hist of BP HW3/1940 |
| 1940 | Battle to establish Y and crypt midle Es | HW3/
95 | pt 3 of Nigel de Grey's Hist of BP HW3/1940 |
| 1940- | GC&CS decrypts Abwehr messages |
| Christopher Andrew Secret Service |
| 1940- | Services did not wish to interfer in SIS |
| Harry Hinsley Vol 1 |
| 1940- | exposition of background to TA problems | HW3/
92 | Hist of Military Intelligence 1926-45 H1940- |
| 1940- | need to keep breaking of E abs secret | HW3/
92 | Hist of Military Intelligence 1926-45 H1940- |
| 1940- | suspicion of Butler's motives re Intcpt | HW3/
92 | Hist of Military Intelligence 1926-45 H1940- |
| 1940- | growth of TA:W/TI,56 in'40 to 1,900 in45 | HW3/
92 | Hist of Military Intelligence 1926-45 H1940- |
| 1940- | growth of TA:W/TI,56 in'40 to 1,900 in45 | HW3/
92 | Hist of Military Intelligence 1926-45 H1940- |
| 1940- | Series of incidents of Germ reading UKN | HW14
/16 | German reading UKNaval Codes for over 1 1940- |
| 1940-1941 | pgs 1289-1284 Dossier on IE,summary refs | HW3/
158 | History of Int Exchnge (IE) in GC&CS HW31940-1941 |
| 1940-1942 | Desguise for decryupts CX/FJ, JQ, MSS |
| R.V.Jones |
| 1940-1945 | Intercept of Germ T/P, FISH: Kenworthy | HW3/
163 | Kenworthy's paper on Intcpt of T/P FISH 1940-1945 |
| 1940-1945 | Intercept of FISH pgs 793-770 | HW3/
163 | Kenworthy's paper on Intcpt of T/P FISH 1940-1945 |
| 1940-41 | pgs 686-648 good coverage, based on HW14 | HW3/
95 | pt 3 of Nigel de Grey's Hist of BP HW3/1940-41 |
| 1940/01 | Dryden founder menber of Hut3 |
| Codebreakers Henry Dryden |
| 1940/01 | Stuart Milner-Barry joined Jan 1940 |
| Hut 6 Story Gordon Welchman |
| 1940/01 | Chatham taking all Enigma intcp | HW14
/4 | Hut 6 memo poss Gordon Welchman HW14/4 |
| 1940/01 | First breaks with Jeffreys sheets | HW14
/4 | Hut 6 memo poss Gordon Welchman HW14/4 |
| 1940/01 | Impossible to provide more operators | HW14
/4 | Hut 6 memo poss Gordon Welchman HW14/4 |
| 1940/01 | Denniston appealed to Y committee | HW14
/4 | Hut 6 memo poss Gordon Welchman HW14/4 |
| 1940/01 | Exploitation moved to Hut 6 | HW3/
95 | Nigel de Grey's Hist of BP HW3/95 |
| 1940/01 | Typex machines modified to do E Decrypt | HW3/
95 | Nigel de Grey's Hist of BP HW3/95 |
| 1940/01 | No means in GC&CS for assesing Int frm E | HW3/
95 | Nigel de Grey's Hist of BP HW3/95 |
| 1940/01 | Neccessary to draw up rules for handling | HW3/
95 | Nigel de Grey's Hist of BP HW3/95 |
| 1940/01 | All subsqnt handling affected by decisio | HW3/
95 | Nigel de Grey's Hist of BP HW3/95 |
| 1940/01 | Hut 6 & Resrch Sectn became barred zone | HW3/
95 | Nigel de Grey's Hist of BP HW3/95 |
| 1940/01 | Hut 3 allowed to select output | HW3/
95 | Nigel de Grey's Hist of BP HW3/95 |
| 1940/01 | Wng Cdr Winterbotham to take E output | HW3/
95 | Nigel de Grey's Hist of BP HW3/95 |
| 1940/01 | FJ section started in Hut3 undr Saunders | HW3/
95 | Nigel de Grey's Hist of BP HW3/95 |
| 1940/01 | Military Section moved from Hut 3 to H 5 | HW3/
95 | Nigel de Grey's Hist of BP HW3/95 |
| 1940/01 | Sq Ldr Shaw, Cpt Edgar and F L Lucas in3 | HW3/
95 | Nigel de Grey's Hist of BP HW3/95 |
| 1940/01 | Hut 3 o/p went via SIS II to Air Germ I | HW3/
95 | Nigel de Grey's Hist of BP HW3/95 |
| 1940/01 | Waters, Stacey, Whitestone, P Lucas join | HW3/
33 | Josh Cooper's Hist of Air Section GC&CS 1940/01 |
| 1940/01 | 1st break in UK of 25/10/39 in Jan 1940 | HW3/
95 | Nigel de Grey Sitz & Blitz Hist of BP 1940/01 |
| 1940/01 | RSS under Worlledge fnd Illicit Tx | HW14
/6 | Denniston to ? re Illicit W/T ciphers H1940/01 |
| 1940/01 | GC&CS need both 3ltr and E intcpts | HW14
/3 | Denniston to? re coord of 3ltr & E intcp1940/01 |
| 1940/01 | Stns to inform Knox of any QWP mesgs | HW14
/3 | Denniston to? re coord of 3ltr & E intcp1940/01 |
| 1940/01- | btwn Jan & Mar 50 days trafic solved onE | HW3/
95 | Nigel de Grey's Hist of BP HW3/95 |
| 1940/01/01 | Tiltman sent Bonsall to join Air | HW3/
33 | Josh Cooper's Hist of Air Section GC&CS 1940/01/01 |
| 1940/01/05 | Knox promoted to Chief assistant GC&CS | HW14
/3 | F G Butler,FO to Denniston re Knox promt1940/01/05 |
| 1940/01/05 | retirement of Oliver Strachey | HW14
/3 | F G Butler,FO to Denniston re Knox promt1940/01/05 |
| 1940/01/06 | 6th Jan 40 first succesful E break Red | HW3/
95 | Nigel de Grey's Hist of BP HW3/95 |
| 1940/01/07 | Knox:Netz must be taken to Paris immedia | HW14
/3 | letter Knox to Denniston re Netz HW141940/01/07 |
| 1940/01/07 | Knox volunteers take Netz Paris himself | HW14
/3 | letter Knox to Denniston re Netz HW141940/01/07 |
| 1940/01/09 | Poles: Jerzy Rozycki,Marian Rejewoli | HW14
/3 | Denniston-Menzies re visit by Poles HW11940/01/09 |
| 1940/01/09 | Poles: Henryk Zygalski | HW14
/3 | Denniston-Menzies re visit by Poles HW11940/01/09 |
| 1940/01/09 | Possible change German E system at war | HW14
/3 | Denniston-Menzies re visit by Poles HW11940/01/09 |
| 1940/01/09 | visit from Poles would be valuable | HW14
/3 | Denniston-Menzies re visit by Poles HW11940/01/09 |
| 1940/01/10 | request fm Denniston-Rivet for Poles vis | HW14
/3 | Denniston to Rivet re visit to Uk by Pol1940/01/10 |
| 1940/01/10 | concern that Germans might change E syst | HW14
/3 | Denniston to Rivet re visit to Uk by Pol1940/01/10 |
| 1940/01/20 | Essential for Chatham to concentrate E | HW14
/3 | Denniston-Butler re Y intcpt of E HW11940/01/20 |
| 1940/01/20 | Denniston: Y stns concentrate Air&Army E | HW14
/3 | Denniston-Butler re Y Intcpt of E HW11940/01/20 |
| 1940/01/25 | Poles kept in France because French pay | HW14
/3 | Denniston?-"C" re Poles and E breaking 1940/01/25 |
| 1940/01/25 | Denniston would hv welcomed visit Poles | HW14
/3 | Denniston?-"C" re Poles and E breaking 1940/01/25 |
| 1940/01/25 | Knox has speeded up key finding | HW14
/3 | Denniston?-"C" re Poles and E breaking 1940/01/25 |
| 1940/01/25 | E Keys produced for Oct 25 and Jan 17 | HW14
/3 | Denniston?-"C" re Poles and E breaking 1940/01/25 |
| 1940/02 | Col Butler to GCpt Blandy Chatham no GAF | HW14
/4 | Hut 6 memo poss Gordon Welchman HW14/4 |
| 1940/02 | 4 ugrads fm Cambridge to Air Section | HW3/
95 | Nigel de Grey Sitz & Blitz Hist of BP 1940/02 |
| 1940/02 | Strachey decoded I W/T messages | HW14
/6 | Denniston to ? re Illicit W/T ciphers H1940/02 |
| 1940/03 | Org of MI |
| Patrick Beesly Very Special Intelligenc1940/03 |
| 1940/03 | First Bombe 14th March 1940 |
| Sqdn Ldr Jones Section PRO paper |
| 1940/03 | 3 staff in Hut 1 Army,Navy and RAF Jones |
| Sqdn Ldr Jones Section PRO paper |
| 1940/03 | the baby also known as the Test Plate |
| Sqdn Ldr Jones Section PRO paper |
| 1940/03 | Machine No 1 "Victory" |
| Sqdn Ldr Jones Section PRO paper |
| 1940/03 | immediate 24hr watches |
| Sqdn Ldr Jones Section PRO paper |
| 1940/03 | FO stns Denmark Hill & Sandridge Enigma | HW14
/4 | Hut 6 memo poss Gordon Welchman HW14/4 |
| 1940/03 | Blandy did not want Air Y to take Enigma | HW3/
33 | Josh Cooper's Hist of Air Section GC&CS 1940/03 |
| 1940/03/01 | Welchman head of Registration Sctn Hut 6 | HW14
/4 | Welchman memo on Registration Sctn in Hu1940/03/01 |
| 1940/03/01 | Depty Hd of H6 Registn Sctn Milner-Barry | HW14
/4 | Welchman memo on Registration Sctn in Hu1940/03/01 |
| 1940/03/01 | Team ldrs H6 Registn Sctn Banister,Smith | HW14
/4 | Welchman memo on Registration Sctn in Hu1940/03/01 |
| 1940/03/01 | Reg. Sectn preparing Females lists Hut 6 | HW14
/4 | Welchman memo on Registration Sctn in Hu1940/03/01 |
| 1940/03/01 | two girls making up Foss sheets Hut 6 | HW14
/4 | Welchman memo on Registration Sctn in Hu1940/03/01 |
| 1940/03/01 | Welchman&Milner-Barry grasp Ger. W/T Org | HW14
/4 | Welchman memo on Registration Sctn in Hu1940/03/01 |
| 1940/03/01 | Interservice problem of E intercept | HW14
/4 | memo from Hut 6 on interception of E HW1940/03/01 |
| 1940/03/01 | Germany M & Air Force E exactly the same | HW14
/4 | memo from Hut 6 on interception of E HW1940/03/01 |
| 1940/03/01 | Germans use low power & freq callsign ch | HW14
/4 | memo from Hut 6 on interception of E HW1940/03/01 |
| 1940/03/01 | Chatham has done magnificent work | HW14
/4 | memo from Hut 6 on interception of E HW1940/03/01 |
| 1940/03/01 | Chatham compilation room vital work | HW14
/4 | memo from Hut 6 on interception of E HW1940/03/01 |
| 1940/03/01 | GC&CS E Section regular and quick decode | HW14
/4 | memo from Hut 6 on interception of E HW1940/03/01 |
| 1940/03/01 | GC&CS success depends on large vols intc | HW14
/4 | memo from Hut 6 on interception of E HW1940/03/01 |
| 1940/03/01 | Still not enough operators at Chatham | HW14
/4 | memo from Hut 6 on interception of E HW1940/03/01 |
| 1940/03/01 | W O wants Chatham to do Germ Army notGAF | HW14
/4 | memo from Hut 6 on interception of E HW1940/03/01 |
| 1940/03/01 | Vital continue GAF in case Germs change | HW14
/4 | memo from Hut 6 on interception of E HW1940/03/01 |
| 1940/03/01 | Cheadle not yet competent to take E | HW14
/4 | memo from Hut 6 on interception of E HW1940/03/01 |
| 1940/03/01 | Problem of M Freq E Intcp must be solved | HW14
/4 | memo from Hut 6 on interception of E HW1940/03/01 |
| 1940/03/28 | reqst for French to send E decodes to UK | HW14
/4 | memo from Saunders to Denniston HW14/4 |
| 1940/03/28 | speeding up of sending French E intcpts | HW14
/4 | memo from Saunders to Denniston HW14/4 |
| 1940/04 | Col Stratton formed Central Int Sect CIS | HW3/
92 | History of Military Section HW3/92 |
| 1940/04 | CIS at Caxton St, home of MI8 | HW3/
92 | History of Military Section HW3/92 |
| 1940/04 | CIS personnel on 4IS establishment | HW3/
92 | History of Military Section HW3/92 |
| 1940/04 | GAF Enigma intcpt at Chatham Army Stn | HW14
/4 | Hut 6 memo poss Gordon Welchman HW14/4 |
| 1940/04 | Germans have superb W/T organisation | HW14
/4 | Hut 6 memo poss Gordon Welchman HW14/4 |
| 1940/04 | Intcpt an Interservice problem | HW14
/4 | Hut 6 memo poss Gordon Welchman HW14/4 |
| 1940/04 | all H6 CX/FJ Info must go to Wintrbotham | HW14
/4 | Minute from CSS to Travis 14/04/40 HW141940/04 |
| 1940/04 | request for I officers for GHQ BEF | HW14
/4 | memo from Butler to Tiltman HW14/4 |
| 1940/04 | Dryden to be withdrawn because civilian | HW14
/4 | memo from Butler to Tiltman HW14/4 |
| 1940/04 | Butler wants clarificatn re "imptnt dev" | HW14
/4 | memo from Butler to Tiltman HW14/4 |
| 1940/04 | Butler says MI8 capable deciding referal | HW14
/4 | memo from Butler to Tiltman HW14/4 |
| 1940/04 | Concern at Army trying to do crypt | HW14
/4 | Denniston to Menzies HW14/4 |
| 1940/04 | concern thet Tiltman's advice not taken | HW14
/4 | Denniston to Menzies HW14/4 |
| 1940/04 | statement of Tiltman's track record | HW14
/4 | Denniston to Menzies HW14/4 |
| 1940/04 | mention of meeting in Paris on Army cryp | HW14
/4 | Denniston to Menzies HW14/4 |
| 1940/04 | Menzies asked to call top level meeting | HW14
/4 | Denniston to Menzies HW14/4 |
| 1940/04 | complaint re lack of Enigma intercept | HW14
/4 | Denniston to Menzies HW14/4 |
| 1940/04 | Col Bayldon pay etc A9 1(e) | HW14
/4 | memo Blandy to Denniston HW14/4 |
| 1940/04 | MI8 officers visiting GC&CS | HW14
/4 | memo to Denniston HW14/4 |
| 1940/04 | Yellow key both German Army and GAF | HW3/
95 | Nigel de Grey's Hist of BP HW3/95 |
| 1940/04 | E decrypt did not effect Norway battle | HW3/
95 | Nigel de Grey's Hist of BP HW3/95 |
| 1940/04 | Hut 3a started just after strt of Norway | HW14
/10 | report of work in Hut 3A for 1940 de Gre1940/04 |
| 1940/04 | Breaking E as agents rpts deprived MI8(a | HW3/
92 | Hist of Military Intelligence 1926-45 H1940/04 |
| 1940/04 | Central Int Sectn, Col Stratton at MI8 | HW3/
92 | Hist of Military Intelligence 1926-45 H1940/04 |
| 1940/04 | security restrictions on E decodes | HW3/
92 | Hist of Military Intelligence 1926-45 H1940/04 |
| 1940/04/08 | Col Makin apptd dep head RAF sectn GC&CS | HW14
/4 | memo Blandy to Denniston HW14/4 |
| 1940/04/08 | from Gp Cpt L F Blandy AI1(e) | HW14
/4 | memo Blandy to Denniston HW14/4 |
| 1940/04/08 | officers outside SIS GC&CS whoknow abt E | HW14
/4 | List of officers in the know about E HW11940/04/08 |
| 1940/04/09 | Germany invaded Denmark 9th April 1940 | HW3/
95 | Nigel de Grey's Hist of BP HW3/95 |
| 1940/04/15 | Yellow key broken 15th April 1940 | HW3/
95 | Nigel de Grey's Hist of BP HW3/95 |
| 1940/04/29 | failed to get yesterday's key out 28/04 | HW14
/4 | Denniston to Menzies HW14/4 |
| 1940/05 | Complaints from services SIS unreliable |
| Christopher Andrew Secret Service |
| 1940/05 | SIS needed overhaul |
| Christopher Andrew Secret Service |
| 1940/05 | FO sends Reilly as Menzies assistant |
| Christopher Andrew Secret Service |
| 1940/05 | First break of GAF Enigma |
| Christopher Andrew Secret Service |
| 1940/05 | Arrived BP |
| Codebreakers Alec Dakin |
| 1940/05 | joined Z Watch under Walter Eytan |
| Codebreakers Alec Dakin |
| 1940/05 | German call sign book captured | HW3/
92 | History of Military Section HW3/92 |
| 1940/05 | German callsign book captured in Norway | HW3/
92 | Hist of Military Intelligence 1926-45 H1940/05 |
| 1940/05 | Special Liaison Party formed at GC&CS | HW3/
92 | Hist of Military Intelligence 1926-45 H1940/05 |
| 1940/05 | need to speed up comms led to SLU/SCU | HW3/
92 | Hist of Military Intelligence 1926-45 H1940/05 |
| 1940/05 | BRIG Gambier-Parry starts SLU/SCU | HW3/
92 | Hist of Military Intelligence 1926-45 H1940/05 |
| 1940/05 | Hut 6 getting about 1,000 messags/day | HW3/
95 | pt 3 of Nigel de Grey's Hist of BP HW3/1940/05 |
| 1940/05/10 | Germany invaded Holland & Belgium 10/05 | HW3/
95 | Nigel de Grey's Hist of BP HW3/95 |
| 1940/05/12 | Col Butler MI8(b) resp Foreign Civ & Mil | HW3/
92 | Hist of Military Intelligence 1926-45 H1940/05/12 |
| 1940/05/14 | Battle for Norway ended May 14th 1940 | HW3/
95 | Nigel de Grey's Hist of BP HW3/95 |
| 1940/05/23 | Bradshaw's Org diagram of GC&CS for FO | HW14
/5 | Denniston to "C" org diagram of GC&CS H1940/05/23 |
| 1940/05/23 | Expansn of GC&CS 200 09/39 700 in 05/40 | HW14
/5 | Denniston to "C" org diagram of GC&CS H1940/05/23 |
| 1940/05/23 | "Construction" refs Code Construction | HW14
/5 | Denniston to "C" org diagram of GC&CS H1940/05/23 |
| 1940/05/28 | Saunders wants more people in Section FJ | HW14
/5 | memo fm Saunders re Personnel in Section1940/05/28 |
| 1940/05/28 | Section FJ in 1st Hut 3 | HW14
/5 | memo fm Saunders re Personnel in Section1940/05/28 |
| 1940/05/28 | Concern that info fm E not being act on | HW14
/5 | memo fm Saunders re Personnel in Section1940/05/28 |
| 1940/05/30 | Dunkirk evacuation btwn 30 May & 4 June | HW3/
95 | Nigel de Grey's Hist of BP HW3/95 |
| 1940/06 | Tiltman in Hut 5 |
| P.W.Filby Floradora paper |
| 1940/06 | Kell and Holt-Wilson dismissed |
| Patrick Beesly Very Special Intelligenc1940/06 |
| 1940/06 | NID17M to exploit GC&CS reading Abwehr |
| Harry Hinsley Vol 1 |
| 1940/06 | The Baby made by BTM Letchworth |
| Codebreakers Joan Murray ne Clark |
| 1940/06 | Joan Murray arrived BP 17 June 1940 |
| Codebreakers Joan Murray ne Clark |
| 1940/06 | Worked with Turing, Kendrick and Twinn |
| Codebreakers Joan Murray ne Clark |
| 1940/06 | in Hut 8 documents from VP623 |
| Codebreakers Joan Murray ne Clark |
| 1940/06 | Denniston in hospital for a stone 1940 |
| Hut 6 Story Gordon Welchman |
| 1940/06 | Philby joined BP and Tiltman in Hut 5 |
| P W Filby Bletchley & Berkeley St Int&Na1940/06 |
| 1940/06 | CIS reinforced by evac from Dunkirk | HW3/
92 | History of Military Section HW3/92 |
| 1940/06 | Cpt Lithgow introduced into Hut 3 | HW3/
92 | History of Military Section HW3/92 |
| 1940/06 | "fruits" sent to MI8 | HW3/
92 | History of Military Section HW3/92 |
| 1940/06 | Lithgow made contribution to Hut 3 & 6 | HW3/
92 | History of Military Section HW3/92 |
| 1940/06 | Chinese records to Sir Everard Duncombe | HW3/
33 | Denniston: Plan for disposal of records 1940/06 |
| 1940/06 | H3a task to reveal GAF Order of Battle | HW14
/10 | report of work in Hut 3A for 1940 de Gre1940/06 |
| 1940/06 | Cpt Lithgow in Hut 3 study callsigns frq | HW3/
92 | Hist of Military Intelligence 1926-45 H1940/06 |
| 1940/06 | SLP based on decodes, cribs passed to H6 | HW3/
92 | Hist of Military Intelligence 1926-45 H1940/06 |
| 1940/06 | SLP staff held on establishment of 4IS | HW3/
92 | Hist of Military Intelligence 1926-45 H1940/06 |
| 1940/06/25 | Hostilities in France ended 25th June 40 | HW3/
95 | Nigel de Grey's Hist of BP HW3/95 |
| 1940/06/26 | Denniston's plan for records disposal | HW3/
33 | Denniston: Plan for disposal of records 1940/06/26 |
| 1940/07 | Dalton given control of SOE |
| Christopher Andrew Secret Service |
| 1940/07 | SOE absorbed Section D of SIS and MIR |
| Christopher Andrew Secret Service |
| 1940/07 | Intelligence Corps re-established |
| Christopher Andrew Secret Service |
| 1940/07 | Intelligence Corps formed |
| Patrick Beesly Very Special Intelligenc1940/07 |
| 1940/07 | crypto liaison officer Hut3-Hut6 |
| Codebreakers Henry Dryden |
| 1940/07 | Turing and simultaneous scanning |
| Codebreakers Joan Murray ne Clark |
| 1940/07 | Welchman's diagonal board |
| Codebreakers Joan Murray ne Clark |
| 1940/07 | Denniston: GC&CS must be crypt cntr frIW | HW14
/6 | Denniston to ? re Illicit W/T ciphers H1940/07 |
| 1940/07/08 | 3 Mil Offcrs in RAF Section on 3 ltr cds | HW14
/6 | Denniston to Butler re Mil Offcrs in GC&1940/07/08 |
| 1940/07/08 | 2 Mil Offcrs in Hut 6 (20 Officers in H6 | HW14
/6 | Denniston to Butler re Mil Offcrs in GC&1940/07/08 |
| 1940/07/08 | 11 Mil Offcrs in Hut 3, 3 for nonE later | HW14
/6 | Denniston to Butler re Mil Offcrs in GC&1940/07/08 |
| 1940/07/08 | hasty reconstruction of French section | HW14
/6 | Denniston to Butler re Mil Offcrs in GC&1940/07/08 |
| 1940/07/14 | List people know src CX/jQ outside GC&CS | HW14
/6 | List people know srce ofCX/JQ outside GC1940/07/14 |
| 1940/07/17 | Terminology to be agreed "Computers" etc | HW14
/6 | Denniston to Godfrey re terminology HW11940/07/17 |
| 1940/07/20 | Mobile column for BQ (Evacuation) Unit | HW14
/6 | Mobile column for BQ (Evacuation) Unit H1940/07/20 |
| 1940/07/20 | Hut 3, 11 car owners | HW14
/6 | Mobile column for BQ (Evacuation) Unit H1940/07/20 |
| 1940/07/20 | Hut 4, 4 car owners | HW14
/6 | Mobile column for BQ (Evacuation) Unit H1940/07/20 |
| 1940/07/20 | Hut 6, 6 car owners | HW14
/6 | Mobile column for BQ (Evacuation) Unit H1940/07/20 |
| 1940/07/20 | Hut 8, 3 car owners | HW14
/6 | Mobile column for BQ (Evacuation) Unit H1940/07/20 |
| 1940/07/31 | Rpt fm Col Worlledge delays in dcrypt IW | HW14
/6 | Butler to Denniston re decrypt IW traffc1940/07/31 |
| 1940/08 | Saunders appointed |
| R.V.Jones |
| 1940/08 | Diagrm of Org of NID Aug 1940 | HW14
/6 | Diagrm of Org of Naval Int Div (NID) Aug1940/08 |
| 1940/08/01 | Hut 6 size 89 | HW14
/6 | personnel and org in GC&CS Aug 1940 H1940/08/01 |
| 1940/08/01 | Hut 7 size 10 | HW14
/6 | personnel and org in GC&CS Aug 1940 H1940/08/01 |
| 1940/08/01 | Cottage size 7 | HW14
/6 | personnel and org in GC&CS Aug 1940 H1940/08/01 |
| 1940/08/01 | Hut 8 size 32 | HW14
/6 | personnel and org in GC&CS Aug 1940 H1940/08/01 |
| 1940/08/03 | Y obtains material,Hut 6 decodes,H 3->JQ | HW14
/6 | Denniston to Hatton-Hall MI6 re procedur1940/08/03 |
| 1940/08/03 | All comms Hut 3 to Army or WO thru MI6 | HW14
/6 | Denniston to Hatton-Hall MI6 re procedur1940/08/03 |
| 1940/08/04 | GC&CS total 748 people | HW14
/6 | personnel and org in GC&CS Aug 1940 H1940/08/04 |
| 1940/08/21 | Captured documents delayed from Alexandr | HW14
/6 | memo Godfrey to Denniston 21 Aug 40 H1940/08/21 |
| 1940/08/26 | Against proposal to trnsfr E to Chicksnd | HW14
/6 | papr on E intcpt problems by Welchman et1940/08/26 |
| 1940/08/26 | transfr fm Chatham to Chick could looseE | HW14
/6 | papr on E intcpt problems by Welchman et1940/08/26 |
| 1940/08/26 | Alexander, Babbage,Milner-Barry,Crawford | HW14
/6 | papr on E intcpt problems by Welchman et1940/08/26 |
| 1940/08/26 | Crawford,Jeffreys,Coleman,Welchman | HW14
/6 | papr on E intcpt problems by Welchman et1940/08/26 |
| 1940/08/27 | Naval Y to be extended to cover ALL trfc | HW14
/6 | Godfrey to Menzies re intercept faciliti1940/08/27 |
| 1940/08/27 | All deptmnts Y expanded to intcpt All | HW14
/6 | Godfrey to Menzies re intercept faciliti1940/08/27 |
| 1940/08/27 | All intcpt info to be pooled | HW14
/6 | Godfrey to Menzies re intercept faciliti1940/08/27 |
| 1940/08/27 | All translations at GC&CS | HW14
/6 | Godfrey to Menzies re intercept faciliti1940/08/27 |
| 1940/09 | Hollerith section outside fence |
| P.W.Filby Floradora paper |
| 1940/09 | William Friedman visit to Tiltman |
| P.W.Filby Floradora paper |
| 1940/09 | Size of BP 100-200 people |
| P.W.Filby Floradora paper |
| 1940/09 | Air Intelligence Directrt up to 240 |
| Harry Hinsley Vol 1 |
| 1940/09 | with Oliver Strachey on Abwehr codes |
| Codebreakers Henry Dryden |
| 1940/09 | Freidman, Sinkov, Rowlett & Kullback EP |
| P W Filby Bletchley & Berkeley St Int&Na1940/09 |
| 1940/09 | 100-200 people in BP |
| P W Filby Bletchley & Berkeley St Int&Na1940/09 |
| 1940/09 | Lithgow advised Intercept Cntrl in Hut 6 | HW3/
92 | History of Military Section HW3/92 |
| 1940/09 | CIS Long Term & Short Term Research | HW3/
92 | History of Military Section HW3/92 |
| 1940/09 | Cheadle computors dev Footprinting | HW3/
83 | Memo from Josh Cooper to Travis 1944 HW1940/09 |
| 1940/09 | CIS into 2, Long Term Res Col Stratton | HW3/
92 | Hist of Military Intelligence 1926-45 H1940/09 |
| 1940/09 | CIS into 2, Short Term Res,Central Party | HW3/
92 | Hist of Military Intelligence 1926-45 H1940/09 |
| 1940/09 | Central Party moved to the Warren, Harpn | HW3/
92 | Hist of Military Intelligence 1926-45 H1940/09 |
| 1940/09 | NS Ital E sent prefix INS | HW3/
16 | War 1939-41 by W F Clarke, Hist Naval Se1940/09 |
| 1940/09/08 | Denniston quotes "section FJ now Hut 3" | HW14
/7 | Denniston to Knox re merge Ital with Hut1940/09/08 |
| 1940/09/08 | Naval Enigma broken in April | HW14
/7 | Denniston to Knox re merge Ital with Hut1940/09/08 |
| 1940/09/08 | Railway E broken August | HW14
/7 | Denniston to Knox re merge Ital with Hut1940/09/08 |
| 1940/09/08 | Clarke not Hut 3 to deal with Italian E | HW14
/7 | Denniston to Knox re merge Ital with Hut1940/09/08 |
| 1940/10/09 | Col Butler proposed MI8 focus on opRadIn | HW3/
92 | Hist of Military Intelligence 1926-45 H1940/10/09 |
| 1940/10/23 | H3a taks ovr circulatn of IS fm Strachey | HW14
/10 | report of work in Hut 3A for 1940 de Gre1940/10/23 |
| 1940/10/31 | Current and proposed Hut 3 6 4IS staff | HW14
/7 | Increases in 4 IS staff at BP HW14/7 |
| 1940/11 | New Director MI5, Sir David Petrie |
| Patrick Beesly Very Special Intelligenc1940/11 |
| 1940/11 | Sht Term Res mvd to Harpenden as Cen Pty | HW3/
92 | History of Military Section HW3/92 |
| 1940/11/02 | Action taken Prof Norman on "Beam" dcryp | HW14
/8 | Action by Prof Norman on "Beams" decrypt1940/11/02 |
| 1940/11/05 | Rpt on staffing RAF met sectn GCCS | HW14
/8 | Report on staffing of RAF met Sectn GC&C1940/11/05 |
| 1940/11/14 | Memo ASD to "C" re copies deGaulle cyphs | HW14
/8 | Memo ASD to "C" re copies de Gaulle cyph1940/11/14 |
| 1940/11/15 | Denniston? on French Liaison problems | HW14
/8 | Memo by Denniston? re French Liaison HW11940/11/15 |
| 1940/11/20 | More spiders(Bombes) urgently needed | HW14
/8 | Need for Spiders, Travis? HW14/8 |
| 1940/11/23 | DofI congrats GC&CS on help to Fighter C | HW14
/8 | Letter of congratulation from DI to GC&C1940/11/23 |
| 1940/11/25 | Bertrand to be asked if needs E info | HW14
/8 | Denniston to "C" re French liaison HW141940/11/25 |
| 1940/11/25 | Ask Bertrand what he is doing with E inf | HW14
/8 | Denniston to "C" re French liaison HW141940/11/25 |
| 1940/11/28 | memo to "C" re need mass prodce Bombes | HW14
/8 | memo to "C" re need to mass prodce Bombe1940/11/28 |
| 1940/11/28 | need to house Bombes in sep shelters | HW14
/8 | memo to "C" re need to mass prodce Bombe1940/11/28 |
| 1940/12 | Org chart for GC&CS 1940 |
| Patrick Beesly Very Special Intelligenc1940/12 |
| 1940/12 | Intelligence Corps operational |
| Harry Hinsley Vol 1 |
| 1940/12 | Navy TA returned to BP |
| Harry Hinsley Vol 1 |
| 1940/12 | Enquiry on strength of GAF | HW3/
83 | Memo from Josh Cooper to Travis 1944 HW1940/12 |
| 1940/12/02 | Rooms 1 to 12 upper floor the Mansion | HW14
/9 | staff by room numbers from Dec 40 list H1940/12/02 |
| 1940/12/02 | Rooms 33 to 51 ground floor the Mansion | HW14
/9 | staff by room numbers from Dec 40 list H1940/12/02 |
| 1940/12/02 | Rooms 21 to 28 upper floor the Mansion | HW14
/9 | staff by room numbers from Dec 40 list H1940/12/02 |
| 1940/12/02 | Alphabetic list of all staff Dec 1940 | HW14
/9 | Staff list at BP for 2nd Dec 1940 HW141940/12/02 |
| 1940/12/22 | background to interception of E | HW14
/9 | paper about need to centralise Int ?auth1940/12/22 |
| 1940/12/22 | Author poss Winterbotham | HW14
/9 | paper about need to centralise Int ?auth1940/12/22 |
| 1940/12/22 | E break "thanks mainly to SIS"!! | HW14
/9 | paper about need to centralise Int ?auth1940/12/22 |
| 1940/12/22 | MI8 have tried to give up taking GAF E | HW14
/9 | paper about need to centralise Int ?auth1940/12/22 |
| 1940/12/22 | Sets at Sandridge,Denmark Hill divertd E | HW14
/9 | paper about need to centralise Int ?auth1940/12/22 |
| 1940/8 | Hut 3 |
| R.V.Jones |
| 1940/8 | Air Section Hut |
| R.V.Jones |
| 1941 | Enigma decrypts CX/FJ |
| R.V.Jones |
| 1941 | Menzies fortunate he controlled BP |
| Christopher Andrew Secret Service |
| 1941 | GC&CS expanded SIS contracted |
| Christopher Andrew Secret Service |
| 1941 | Tensions within SIS, pr-war v wartime |
| Christopher Andrew Secret Service |
| 1941 | GC&CS poorly organised |
| Christopher Andrew Secret Service |
| 1941 | reasons for its success |
| Christopher Andrew Secret Service |
| 1941 | Churchill's "no stone unturned.." quote |
| Christopher Andrew Secret Service |
| 1941 | Start of move into intelligence by GC&CS |
| Christopher Andrew Secret Service |
| 1941 | original Hut 3 moves to larger Hut |
| Gordon Welchman Hut 6 Story |
| 1941 | U Boats carry 3 months settings |
| Patrick Beesly Very Special Intelligenc1941 |
| 1941 | Officer only signals |
| Patrick Beesly Very Special Intelligenc1941 |
| 1941 | Short signals |
| Patrick Beesly Very Special Intelligenc1941 |
| 1941 | wealth of info from research at GC&CS |
| Harry Hinsley Vol 1 |
| 1941 | GC&CS poor relations with AI & MI |
| Harry Hinsley Vol 1 |
| 1941 | GC&CS set up Inter-Service Distrbtn Sctn |
| Harry Hinsley Vol 1 |
| 1941 | Cheadle doing intelligence |
| Codebreakers Peter Lucas |
| 1941 | Liaison unit in Hut 3 with Cheadle |
| Codebreakers Peter Lucas |
| 1941 | Making decrypts availabe to NID at Admlt |
| Codebreakers Walter Eytan |
| 1941 | Hut 4's own T/P room manned by WAAF |
| Codebreakers Walter Eytan |
| 1941 | Advised by Frank Birch to stay civilian |
| Codebreakers Walter Eytan |
| 1941 | Colman headed Intercept Control Room |
| Hut 6 Story Gordon Welchman |
| 1941 | Milner-Barry crib hunting |
| Hut 6 Story Gordon Welchman |
| 1941 | Alexander & Babbage in Machine Room |
| Hut 6 Story Gordon Welchman |
| 1941 | Fletcher gen. Admn & Reg & Decode Rooms |
| Hut 6 Story Gordon Welchman |
| 1941 | Enigma Intelligence to larger Hut 3 |
| Hut 6 Story Gordon Welchman |
| 1941 | Joint Army RAF Int unit estab at BP |
| Hut 6 Story Gordon Welchman |
| 1941 | Hut 3/Hut 6 still under Foreign Of Admn |
| Hut 6 Story Gordon Welchman |
| 1941 | Denniston to London to work on Dip trfic |
| Hut 6 Story Gordon Welchman |
| 1941 | Filby in Nigel de Gray's section |
| P W Filby Bletchley & Berkeley St Int&Na1941 |
| 1941 | Moved to McVittie's weather group |
| P W Filby Bletchley & Berkeley St Int&Na1941 |
| 1941 | Lng Trm Pty reconstructed GAF"Bird Book" | HW3/
92 | History of Military Section HW3/92 |
| 1941 | GC&CS did not think TA could help crypt | HW3/
92 | History of Military Section HW3/92 |
| 1941 | GC&CS wanted Lithgow's section increased | HW3/
92 | History of Military Section HW3/92 |
| 1941 | GC&CS opposed to formation of VI IS | HW3/
92 | History of Military Section HW3/92 |
| 1941 | Maggs ordered to adopt tie-up methods | HW3/
83 | Memo from Josh Cooper to Travis 1944 HW1941 |
| 1941 | Col Worlledge built up RSS | HW3/
92 | Hist of Military Intelligence 1926-45 H1941 |
| 1941 | No central tech Int at BP until E solved | HW3/
17 | W Bodsworth answers to Christopher's qus1941 |
| 1941- | Amalgamation of BP MS and AS |
| Patrick Beesly Very Special Intelligenc1941- |
| 1941- | pgs 1245-1238 overview of growth of IE | HW3/
158 | Introduction to Hist of IE at BP HW3/1941- |
| 1941/01 | Chatham expanded to 219 staff in Jan 41 | HW3/
92 | Hist of Military Intelligence 1926-45 H1941/01 |
| 1941/01/05 | Denniston: dept reports for work in 1940 | HW14
/10 | Denniston requests report of work in 1941941/01/05 |
| 1941/01/05 | items to be shown in years report | HW14
/10 | Denniston requests report of work in 1941941/01/05 |
| 1941/01/08 | Origins of Hut 3a headed by Nigel de Gre | HW14
/10 | report of work in Hut 3A for 1940 de Gre1941/01/08 |
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