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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

• Decrypts of Comintern messages: Moscow, USSR, with Spain; Spain with France including...

  Held by

  The National Archives, Kew

  Date

  1936 July-1936 Dec

  Reference

  HW 17/27

• Assistant Chief of Air Staff and Chief of the Imperial General Staff (CIGS) to PM...

  Held by

  The National Archives, Kew

  Date

  1941 Aug 26

  Reference

  HW 1/27

• Weekly reports on Second World War German army and air force communications

  Held by

  The National Archives, Kew

  Date

  1944 Jun 23-1944 Jul 20

  Reference

  HW 45/27

• Development of liaison between US Army Signal Intelligence Service and the British...

  Held by

  The National Archives, Kew

  Date

  1942 Aug 21 - 1945 Aug 13

  Reference

  HW 57/27

• Medical services

  Held by

  The National Archives, Kew

  Date

  1939 Nov 07 - 1945 Feb 28

  Reference

  HW 64/27

• Miscellaneous reports on German naval activity

  Held by

  The National Archives, Kew

  Date

  1945 Apr 20-1945 May 09

  Reference

  HW 18/27

• Minutes of periodic DF Conferences attended by representatives from stations in the...

  Held by

  The National Archives, Kew

  Date

  1943 Nov 10-1945 Jul 17

  Reference

  HW 42/27

• Correspondence at BP between WF Clarke, W Bodsworth and F Birch: Clarke's attempts...

  Held by

  The National Archives, Kew

  Date

  1941

  Reference

  HW 3/27

• Commercial reports

  Held by

  The National Archives, Kew

  Date

  1940 Apr 23-1940 Apr 30

  Reference

  HW 29/27

• The Welchman papers describing the organisation of ENIGMA and the recovery of its...

  Held by

  The National Archives, Kew

  Date

  1941 Jan 01 - 1943 Dec 31

  Reference

  HW 25/27

• Italian Mission - CXG Signals to and from Rome. GC&CS Berkeley Street correspondence...

  Held by

  The National Archives, Kew

  Date

  1944 Jul 29 - 1945 May 23

  Reference

  HW 53/27

• Signals passed between CBME and Malta

  Held by

  The National Archives, Kew

  Date

  1941 Jul 01 - 1943 Apr 30

  Reference

  HW 51/27