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• Accessions administration: HW 47

  Held by

  The National Archives, Kew

  Date

  2002 Jan 1 - 2002 Dec 31

  Reference

  PRO 57/15777

• General records of the Government Code and Cypher School

  Held by

  Date

  1914-1979

  Reference

• 3/NBF/C21: Covernames, codewords and personal names in Moscow - London GRU messages....

  Held by

  The National Archives, Kew

  Date

  1940-1948

  Reference

  HW 15/61/18

• Government Code and Cypher School: Records Concerning Polish Business and Activities

  Held by

  The National Archives, Kew

  Date

  1940-1946

  Reference

  HW 47

• Visit to Estonia 1931, W/T [wireless telegraphy] log at Warska 4 August 1931 - 17...

  Held by

  The National Archives, Kew

  Date

  1931 Aug 04 - 1931 Sep 29

  Reference

  HW 61/47

• PDH 2 - Progress Reports. These cryptographic reports cover production sections at...

  Held by

  The National Archives, Kew

  Date

  1939 Feb 28 - 1941 Jul 12

  Reference

  HW 53/47

• "The Polish Cyphers for Diplomatic and Consular Traffic" by Scherschmidt (1943),...

  Held by

  The National Archives, Kew

  Date

  1941 May 01-1945 Nov 15

  Reference

  HW 47/2

• UKUSA Sigint relations: GCCS Civil Section monthly report for May 1942 with sections...

  Held by

  The National Archives, Kew

  Date

  1942 June-July

  Reference

  HW 14/47

• Decrypts of intercepted diplomatic communications. Afghanistan: 13412-13413, 13445,...

  Held by

  The National Archives, Kew

  Date

  1923 June

  Reference

  HW 12/47

• Assembly Hall at Bletchley Park

  Held by

  The National Archives, Kew

  Date

  1942 Oct 10 - 1946 Jan 16

  Reference

  HW 64/47

• GC&CS Army and Air Force Sigint Volume IV: The Organisation and Evolution of British...

  Held by

  The National Archives, Kew

  Date

  1914 Aug 01 - 1945 Aug 30

  Reference

  HW 43/47

• German section: reports of German army and air force high grade machine decrypts

  Held by

  The National Archives, Kew

  Date

  Dec 20 1941-Dec 23 1941

  Reference

  HW 5/47

• Soviet Comintern messages: Service 156: Moscow to and from Italy. Moscow, callsigns...

  Held by

  The National Archives, Kew

  Date

  1944 Apr 27-1945 May 26

  Reference

  HW 17/47

• Commercial messages passed over diplomatic channels

  Held by

  Creating government department or its successor

  Date

  1945 Oct 01-1945 Oct 31

  Reference

  HW 32/47

• 80 Wing Reports of beacon intercept for 80 Wing

  Held by

  The National Archives, Kew

  Date

  1941 Jan 17-1943 Aug 31

  Reference

  HW 2/47

• Reports of Japanese army air decrypts with subject headers

  Held by

  The National Archives, Kew

  Date

  1944 Sep 01-1944 Oct 31

  Reference

  HW 28/47

• Reports of Japanese naval air decrypts

  Held by

  The National Archives, Kew

  Date

  1945 Jul 02-1945 Aug 13

  Reference

  HW 27/47

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

  Held by

  The National Archives, Kew

  Date

  1945 Mar 04-1945 Mar 29

  Reference

  HW 45/47

• 51454-52514

  Held by

  The National Archives, Kew

  Date

  1943 Feb 01-1943 Feb 14

  Reference

  HW 19/47

• German Technical Aid to Japan: report based on all available intelligence material...

  Held by

  The National Archives, Kew

  Date

  1945 Aug 31

  Reference

  HW 13/47