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• Co-operation between GC&CS, Signals Liaison Unit (SLU), Washington and the Signal...

  Held by

  The National Archives, Kew

  Date

  1945 Jun 01 - 1945 Aug 31

  Reference

  HW 57/4

• Exchange of information on Japanese meteorological cyphers between GC&CS and signal...

  Held by

  The National Archives, Kew

  Date

  1943 Jan 01 - 1944 Jun 30

  Reference

  HW 57/6

• Co-operation between GC&CS, Signals Liaison Unit (SLU), Washington and the Signal...

  Held by

  The National Archives, Kew

  Date

  1944 Jan 01 - 1944 Dec 31

  Reference

  HW 57/35

• Co-operation between GC&CS, Signals Liaison Unit (SLU), Washington and the Signal...

  Held by

  The National Archives, Kew

  Date

  1945 Jan 01 - 1945 Sep 19

  Reference

  HW 57/34

• Co-operation between USA, China and United Kingdom on Japanese communications and...

  Held by

  The National Archives, Kew

  Date

  1942 Aug 05 - 1942 Sep 25

  Reference

  HW 57/11

• Report on the British Y Service by Captain Brown of the US Signal Corps

  Held by

  The National Archives, Kew

  Date

  1942 Jan 01 - 1942 Aug 31

  Reference

  HW 57/25

• Co-operation with the US Army Sigint Organisation based at Arlington Hall, Washington

  Held by

  The National Archives, Kew

  Date

  1944 Sep 01 - 1944 Dec 31

  Reference

  HW 57/32

• GC&CS Army and Air Force Sigint Volume XIV: Intelligence - Army Y Service - European...

  Held by

  The National Archives, Kew

  Date

  1939 Sep 01 - 1945 Aug 30

  Reference

  HW 43/57

• Enemy exploitation of RAF WTI (wireless telegraphy intelligence) in the Far East:...

  Held by

  The National Archives, Kew

  Date

  1944 Mar 22 - 1945 Jul 31

  Reference

  HW 40/57

• Decrypts of Japanese naval air messages

  Held by

  The National Archives, Kew

  Date

  1944 Nov 13-1945 Jul 31

  Reference

  HW 27/57

• Including German report on Franco-German military cooperation in Levant

  Held by

  The National Archives, Kew

  Date

  Jan 22 1942-Jan 25 1942

  Reference

  HW 5/57

• Soviet Comintern messages: ISCOT 401-500

  Held by

  The National Archives, Kew

  Date

  1944 Oct 21-1944 Nov 15

  Reference

  HW 17/57

• Telegrams passing between the Spanish Air Attach? in Rome and (mainly) the Spanish...

  Held by

  The National Archives, Kew

  Date

  1942 Mar 12-1943 Oct 3

  Reference

  HW 21/57

• Log book of COM report distribution

  Held by

  The National Archives, Kew

  Date

  1942 Aug 17-1942 Dec 29

  Reference

  HW 32/57

• Communications and cypher systems of army signals intelligence

  Held by

  The National Archives, Kew

  Date

  1942 Dec 26 - 1944 Mar 14

  Reference

  HW 51/57

• Staff recruitment, selection and pay; WRNS postings, WRNS to discontinue term Station...

  Held by

  The National Archives, Kew

  Date

  1942 Nov 1-10

  Reference

  HW 14/57

• 62760-63709. 63018-63021 missing at transfer. 63505-63509 not used

  Held by

  The National Archives, Kew

  Date

  1943 Jul 01-1943 Jul 16

  Reference

  HW 19/57

• Collection of reports on wide-ranging subjects, including moves of various senior...

  Held by

  The National Archives, Kew

  Date

  1945 May 1-1945 July 31

  Reference

  HW 13/57

• GP traffic No 12, plain language messages in German

  Held by

  The National Archives, Kew

  Date

  1943 Oct

  Reference

  HW 16/57

• Kesselring's order of the day outlining tasks to help fulfil Fuehrer's Great Plan....

  Held by

  The National Archives, Kew

  Date

  1941 Sept 9

  Reference

  HW 1/57