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  Piece

  GC&CS Army and Air Force Sigint Volume XIX: Contents, General Index and Sources

  GC&CS Army and Air Force Sigint Volume XIX: Contents, General Index and Sources

  Held by

  The National Archives, Kew

  Date

  1939 Sep 01 - 1945 Aug 30

  Reference

  HW 43/62

• Catalogue level

  Piece

  GC&CS Army and Air Force Sigint Volume X: Japanese Cryptographic Systems and their...

  GC&CS Army and Air Force Sigint Volume X: Japanese Cryptographic Systems and their Solution by Lt Col F S Thompson

  Held by

  Creating government department or its successor

  Date

  1939 Sep 01 - 1945 Aug 30

  Reference

  HW 43/53

• Catalogue level

  Piece

  Enemy exploitation of British Army high grade codes and cyphers: miscellaneous reports...

  Enemy exploitation of British Army high grade codes and cyphers: miscellaneous reports and correspondence

  Held by

  The National Archives, Kew

  Date

  1942 Jan 29 - 1945 Mar 21

  Reference

  HW 40/43

• Catalogue level

  Piece

  The History of British Sigint 1914-1945. Vol I: Chapters I-XII. Period 1: 'Introductory,...

  The History of British Sigint 1914-1945. Vol I: Chapters I-XII. Period 1: 'Introductory, Aug 1914-Aug 1939'. Period 2: 'Improvising, Sept 1939-Dec 1940'. Period 3: 'Formative, Jan 1941-Feb 1942'

  Held by

  The National Archives, Kew

  Date

  1914 Aug 01-1939 Aug 31

  Reference

  HW 43/1

• Catalogue level

  Piece

  GC&CS Naval Sigint Volume V(a): The Organisation and Evolution of British Sigint...

  GC&CS Naval Sigint Volume V(a): The Organisation and Evolution of British Sigint by Frank Birch. Part 4 Japanese. Attached are Remarks by Cmdr E H Colegrave RN, July 1953

  Held by

  The National Archives, Kew

  Date

  1924 Jan 01 - 1945 Aug 30

  Reference

  HW 43/13

• Catalogue level

  Piece

  GC&CS Naval Sigint Volume VII: The German Navy's Use of Special Intelligence and...

  GC&CS Naval Sigint Volume VII: The German Navy's Use of Special Intelligence and Reactions to Allied Use by Lt Cmdr K W McMahon USNR

  Held by

  The National Archives, Kew

  Date

  1939 Sep 01 - 1945 Aug 30

  Reference

  HW 43/17

• Catalogue level

  Piece

  GC&CS Naval Sigint Volume XI: The Processing of Decrypts by W G Ettinghausen and...

  GC&CS Naval Sigint Volume XI: The Processing of Decrypts by W G Ettinghausen and Cmdr (S) J P McIntyre RN

  Held by

  The National Archives, Kew

  Date

  1939 Sep 01 - 1945 Aug 30

  Reference

  HW 43/21

• Catalogue level

  Piece

  GC&CS Naval Sigint Volume XIII: Technical Intelligence and the Processing of Captured...

  GC&CS Naval Sigint Volume XIII: Technical Intelligence and the Processing of Captured Documents by Frank Birch

  Held by

  The National Archives, Kew

  Date

  1939 Sep 01 - 1945 Aug 30

  Reference

  HW 43/23

• Catalogue level

  Piece

  The Sixta History. Appendix I (First Part)

  The Sixta History. Appendix I (First Part)

  Held by

  The National Archives, Kew

  Date

  1939 Sep 01 - 1945 May 30

  Reference

  HW 43/84

• Catalogue level

  Piece

  GRU (Soviet Intelligence) Military Attaché Traffic: Moscow with London, United Kingdom....

  GRU (Soviet Intelligence) Military Attaché Traffic: Moscow with London, United Kingdom. (Described at item level)

  Held by

  The National Archives, Kew

  Date

  1940 Mar 3-1940 Dec 20

  Reference

  HW 15/43

• Catalogue level

  Piece

  GC&CS Naval Cryptanalytic Studies Volume IX: The Japanese Fleet General Purpose System...

  GC&CS Naval Cryptanalytic Studies Volume IX: The Japanese Fleet General Purpose System II by E H Simpson

  Held by

  The National Archives, Kew

  Date

  1939 Sep 01 - 1945 Aug 30

  Reference

  HW 43/34

• Catalogue level

  Piece

  Reports in the series QT/6001 to QT/6500.

  Reports in the series QT/6001 to QT/6500.

  Held by

  The National Archives

  Date

  1942 Nov 13-1942 Nov 19

  Reference

  HW 20/43

• Catalogue level

  Piece

  Codeword Ultra to be used for all Sigint material previously referred to as Special;...

  Codeword Ultra to be used for all Sigint material previously referred to as Special; Sigint background talks for clerical staff of GCCS Diplomatic and Commercial Sections in London to start on July 23, replies from Diplomatic and Commercial Sections …

  Held by

  The National Archives, Kew

  Date

  1942 July 11-20

  Reference

  HW 14/43

• Catalogue level

  Piece

  Soviet Comintern messages: Service 183: Moscow to and from Czechoslovakia. Moscow,...

  Soviet Comintern messages: Service 183: Moscow to and from Czechoslovakia. Moscow, callsigns WHD, LGL and ZBV, 23 September to 19 December used message serial numbers 26-72. Czechoslovakia, callsigns JMC and OKQ, 12 November to 16 December 1944; mess…

  Held by

  The National Archives, Kew

  Date

  1944 Sept 23-1944 Dec 19

  Reference

  HW 17/43

• Catalogue level

  Piece

  Co-operation with Russia on German codes

  Co-operation with Russia on German codes

  Held by

  The National Archives, Kew

  Date

  1942 Feb 01 - 1943 Apr 30

  Reference

  HW 61/43

• Catalogue level

  Piece

  The History of the Japanese Air Intelligence Section October 1943 to October 1945....

  The History of the Japanese Air Intelligence Section October 1943 to October 1945. Detailed description of the work of the section

  Held by

  The National Archives, Kew

  Date

  1943 Oct 01 - 1945 Oct 31

  Reference

  HW 43/65

• Catalogue level

  Piece

  The Sixta History. Section O, Appendices I-V

  The Sixta History. Section O, Appendices I-V

  Held by

  The National Archives, Kew

  Date

  1939 Sep 01 - 1945 May 30

  Reference

  HW 43/93

• Catalogue level

  Piece

  The Sixta History. Appendix N, Supplements Six to Eleven

  The Sixta History. Appendix N, Supplements Six to Eleven

  Held by

  The National Archives, Kew

  Date

  1939 Sep 01 - 1945 May 30

  Reference

  HW 43/92

• Catalogue level

  Piece

  The Sixta History. Appendix N, Supplements One to Two

  The Sixta History. Appendix N, Supplements One to Two

  Held by

  The National Archives, Kew

  Date

  1939 Sep 01 - 1945 May 30

  Reference

  HW 43/89

• Catalogue level

  Piece

  History of Japanese Traffic Analysis Section

  History of Japanese Traffic Analysis Section

  Held by

  The National Archives, Kew

  Date

  1942 May 01 - 1945 Aug 30

  Reference

  HW 43/66