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• Papers on various staff matters including transport, washing facilities, accommodation...

  Held by

  The National Archives, Kew

  Date

  1943 Jan 26 - 1944 Mar 02

  Reference

  HW 72/10

• Liaison with Indian signal intelligence authorities and intercept stations

  Held by

  The National Archives, Kew

  Date

  1942 Apr 01 - 1943 Oct 27

  Reference

  HW 61/10

• Security of electronic communications

  Held by

  Creating government department or its successor

  Date

  1956 Jan-1961 June

  Reference

  HW 9/10

• Japanese and Siamese (Thai) diplomatic and attaché telegrams

  Held by

  The National Archives, Kew

  Date

  1945 May 19-July 7

  Reference

  HW 10/3

• Commercial reports

  Held by

  The National Archives, Kew

  Date

  1940 Jan 25-1940 Jan 31

  Reference

  HW 29/10

• Government Code and Cypher School: Far East diplomatic summaries

  Held by

  The National Archives, Kew

  Date

  1945 Apr 6-Nov 19

  Reference

  HW 10/1

• French Liaison. Notes on Anglo-French cooperation up to the fall of France (ENIGMA...

  Held by

  The National Archives, Kew

  Date

  1938 Sep 09 - 1945 May 02

  Reference

  HW 50/10

• Correspondence with USA on Japanese meteorological cyphers

  Held by

  The National Archives, Kew

  Date

  1944 Jan 08 - 1944 Aug 08

  Reference

  HW 54/10

• Y Board 1943 Subjects discussed include: liaison with Russians memorandum on the...

  Held by

  The National Archives, Kew

  Date

  1943 Jan 07-1943 Oct 19

  Reference

  HW 42/10

• Reports in the series MK/2501 to MK/3000.

  Held by

  The National Archives

  Date

  1942 Feb 11-1942 Feb 28

  Reference

  HW 20/10

• ENIGMA machine - early history (written after the event). H R FOSS: Reminiscences...

  Held by

  The National Archives, Kew

  Date

  1949 Sep 30-1949 Oct 31

  Reference

  HW 25/10

• Reports of decrypts of Japanese military attachés messages

  Held by

  The National Archives, Kew

  Date

  1943 Jul 24-1943 Aug 23

  Reference

  HW 35/10

• Intelligence reports on foreign air forces. (Described at item level)

  Held by

  The National Archives, Kew

  Date

  1938 Mar 15-1938 Apr 13

  Reference

  HW 21/10

• Reports of Japanese naval air decrypts

  Held by

  The National Archives, Kew

  Date

  1944 Mar 22-1944 Aug 21

  Reference

  HW 27/10

• Censors. Correspondence concerning acquisition of telegraphic messages through the...

  Held by

  The National Archives, Kew

  Date

  1942 Mar 19 - 1943 Dec 13

  Reference

  HW 53/10

• Exploitation of US Army cyphers by the Germans

  Held by

  The National Archives, Kew

  Date

  1943 Oct 16 - 1945 Mar 17

  Reference

  HW 40/10

• Monthly wireless activity reports.

  Held by

  The National Archives, Kew

  Date

  1935 Jul 01-1935 Dec 31

  Reference

  HW 2/10

• STARK 252-281

  Held by

  The National Archives, Kew

  Date

  1945 Mar 01-1945 Mar 31

  Reference

  HW 39/10

• Polish affairs

  Held by

  The National Archives, Kew

  Date

  1944 Nov 26-1945 Sep 13

  Reference

  HW 34/10

• MGB (Soviet Ministry of State Security) Traffic: Moscow with Mexico City, Mexico....

  Held by

  The National Archives, Kew

  Date

  1944 Jan 15-1945 June 13

  Reference

  HW 15/10