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• Accessions administration: HW 27

  Held by

  The National Archives, Kew

  Date

  2000 Jan 1 - 2002 Dec 31

  Reference

  PRO 57/15758

• See HW 15/33 1944 Dec 27

  Held by

  The National Archives, Kew

  Date

  1945 Jan 31-1945 Feb 1

  Reference

  HW 15/34/7

• See HW 15/33 1944 Dec 27

  Held by

  The National Archives, Kew

  Date

  1945 Feb 9

  Reference

  HW 15/34/8

• General records of the Government Code and Cypher School

  Held by

  Date

  1914-1979

  Reference

• See HW 15/33, 1944 Dec...

  Held by

  The National Archives, Kew

  Date

  1945 Jan 13

  Reference

  HW 15/34/3

• Government Code and Cypher School: Naval Section and Air Section: Reports based on...

  Held by

  The National Archives, Kew

  Date

  1943-1945

  Reference

  HW 27

• Reports of Japanese naval air decrypts

  Held by

  The National Archives, Kew

  Date

  1944 Sep 01-1945 Mar 19

  Reference

  HW 27/27

• "AKIM's" wife's desire to go back to the Soviet Union. 1. New York.

  Held by

  The National Archives, Kew

  Date

  1944 Nov 21

  Reference

  HW 15/27/27

• Reports of Japanese naval air decrypts

  Held by

  The National Archives, Kew

  Date

  1944 Mar 22-1944 Sep 30

  Reference

  HW 27/13

• Reports of Japanese naval air decrypts

  Held by

  The National Archives, Kew

  Date

  1945 May 19-1945 Jul 17

  Reference

  HW 27/41

• GC&CS Naval Cryptanalytic Studies Volume II: The German Steckered Enigma I by M A...

  Held by

  Creating government department or its successor

  Date

  1939 Sep 01 - 1945 Aug 30

  Reference

  HW 43/27

• Exploitation of Russian Military communications

  Held by

  Creating government department or its successor

  Date

  1946 Apr 01 - 1949 Jun 24

  Reference

  HW 40/27

• Note on the organisational data concerning the Japanese naval air force submitted...

  Held by

  The National Archives, Kew

  Date

  1945 Aug 19-1945 Aug 19

  Reference

  HW 27/59

• Decrypts of Japanese army and army air force messages

  Held by

  The National Archives, Kew

  Date

  1944 Sep 01-1945 Feb 28

  Reference

  HW 52/27

• Naval Miscellaneous Papers January-April 1943 These papers, collected by Frank Birch,...

  Held by

  The National Archives, Kew

  Date

  1943 Jan 01-1943 Apr 30

  Reference

  HW 8/27

• Decrypts of intercepted diplomatic communications. Afghanistan: 8107, 8141-8144,...

  Held by

  The National Archives, Kew

  Date

  1921 Oct

  Reference

  HW 12/27

• Signals intelligence co-operation with Russia

  Held by

  The National Archives, Kew

  Date

  1942 Jan 01 - 1943 Dec 31

  Reference

  HW 61/27

• Signals to RAF delegation in Washington from GC&CS concerning Japanese naval air...

  Held by

  The National Archives, Kew

  Date

  1944 Mar 12 - 1944 Mar 13

  Reference

  HW 27/64

• CPB: agendas/minutes of meetings and reports.

  Held by

  The National Archives, Kew

  Date

  1944 June-1950 July

  Reference

  HW 9/27

• Note on two tables of the Japanese army air force chain of command submitted by the...

  Held by

  The National Archives, Kew

  Date

  1945 Aug 19-1945 Aug 19

  Reference

  HW 27/60