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• Accessions administration: HW 36

  Held by

  The National Archives, Kew

  Date

  2000 Jan 1 - 2001 Dec 31

  Reference

  PRO 57/15767

• Appendix 4 Ottawa (formerly Appendix D) - see HW 15/36 for message texts

  Held by

  The National Archives, Kew

  Date

  1940-1948

  Reference

  HW 15/61/8

• General records of the Government Code and Cypher School

  Held by

  Date

  1914-1979

  Reference

• Government Code and Cypher School: Diplomatic Section: Reports of German Diplomatic...

  Held by

  The National Archives, Kew

  Date

  1942-1943

  Reference

  HW 36

• GC&CS Naval Cryptanalytic Studies Volume XI: Japanese Early High-Grade Cyphers and...

  Held by

  Creating government department or its successor

  Date

  1939 Sep 01 - 1945 Aug 30

  Reference

  HW 43/36

• RAF Middle East summaries describing enemy operational activity, transport movements...

  Held by

  The National Archives, Kew

  Date

  1942 Oct 06-1942 Nov 05

  Reference

  HW 41/36

• GRU (Soviet Intelligence) Military Attaché Traffic: Moscow from Ottawa, Canada. (Described...

  Held by

  The National Archives, Kew

  Date

  1944 Jan 22-1944 Feb 4

  Reference

  HW 15/36

• Decrypts of intercepted diplomatic communications. Afghanistan: 10534-10535, 10547-10548,...

  Held by

  The National Archives, Kew

  Date

  1922 July

  Reference

  HW 12/36

• Establishment questions in the secret services

  Held by

  The National Archives, Kew

  Date

  1943 May 06 - 1943 Jun 14

  Reference

  HW 64/36

• Commercial reports

  Held by

  The National Archives, Kew

  Date

  1940 Jul 13-1940 Jul 22

  Reference

  HW 29/36

• Plus some Italian Naval communications

  Held by

  The National Archives, Kew

  Date

  Oct 27 1941-Nov 4 1941

  Reference

  HW 5/36

• Vol. XXIII Northern Waters by Lieutenant Commander L A Griffiths, RNVR

  Held by

  The National Archives, Kew

  Date

  1939 - 1945

  Reference

  HW 11/36

• Decrypts of Comintern messages: Moscow, USSR to United States. (Described at item...

  Held by

  The National Archives, Kew

  Date

  1935 June-1936 Aug

  Reference

  HW 17/36

• 1. Instruction from Cdr A.G. Denniston concerning the decryption and translation...

  Held by

  The National Archives, Kew

  Date

  1939 Dec 02-1944 Jan 23

  Reference

  HW 36/5

• This folder contains mainly typescripts of decrypted messages in the original German....

  Held by

  The National Archives, Kew

  Date

  1942 Jul 14-1943 Aug 23

  Reference

  HW 36/7

• Mainly Ministry of Foreign Affairs, Berlin, in communication with Lourenco Marques...

  Held by

  The National Archives, Kew

  Date

  1945 Jan 01-1945 Nov 01

  Reference

  HW 36/4

• Commercial messages passed over diplomatic channels

  Held by

  The National Archives, Kew

  Date

  1945 Feb 01-1945 Feb 28

  Reference

  HW 32/36

• Personal security form for all members of GCCS warning against careless talk, security...

  Held by

  The National Archives, Kew

  Date

  1942 May 1-15

  Reference

  HW 14/36

• Interception in Greece of Italian conmmunications

  Held by

  The National Archives, Kew

  Date

  1940 Dec 05 - 1940 Dec 26

  Reference

  HW 51/36

• Naval Miscellaneous Papers Apr-June 1945. These papers, collected by Frank Birch,...

  Held by

  The National Archives, Kew

  Date

  1945 Apr 01-1945 Jun 30

  Reference

  HW 8/36