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  Italian Mission. Correspondence with Cypher Security Mission in Rome, charged with...

  Italian Mission. Correspondence with Cypher Security Mission in Rome, charged with security of Italian diplomatic communications

  Held by

  The National Archives, Kew

  Date

  1944 Jul 24 - 1945 Jun 11

  Reference

  HW 53/7

• Catalogue level

  Piece

  DSH 10 - Near East codes and ciphers. Correspondence on acquisition and processing...

  DSH 10 - Near East codes and ciphers. Correspondence on acquisition and processing of Near and Middle East codes and cyphers

  Held by

  The National Archives, Kew

  Date

  1942 Feb 13 - 1944 Jun 19

  Reference

  HW 53/14

• Catalogue level

  Piece

  Re-organisation of 'Y' Service (War), Sept 1939

  Re-organisation of 'Y' Service (War), Sept 1939

  Held by

  The National Archives, Kew

  Date

  1939 Sep 01-1939 Sep 30

  Reference

  HW 2/53

• Catalogue level

  Piece

  PDH 3 - F Reports to SSA, War Department [Signal Security Agency, Arlington Hall,...

  PDH 3 - F Reports to SSA, War Department [Signal Security Agency, Arlington Hall, Washington]. Cryptological liaison letters sent by Captain Walter J Fried from Bletchley Park to the US Army Sigint authority in Washington

  Held by

  The National Archives, Kew

  Date

  1944 Mar 31 - 1944 Nov 13

  Reference

  HW 53/48

• Catalogue level

  Piece

  PDH 6 historical reports. Report on plans for the post-war organisation of the Diplomatic...

  PDH 6 historical reports. Report on plans for the post-war organisation of the Diplomatic and Commercial Sections

  Held by

  The National Archives, Kew

  Date

  1944 Oct 01 - 1944 Oct 11

  Reference

  HW 53/3

• Catalogue level

  Piece

  Japanese naval decrypts

  Japanese naval decrypts

  Held by

  The National Archives, Kew

  Date

  1943 Dec 01-1943 Dec 04

  Reference

  HW 23/53

• Catalogue level

  Piece

  58649-59666

  58649-59666

  Held by

  The National Archives, Kew

  Date

  1943 May 01-1943 May 15

  Reference

  HW 19/53

• Catalogue level

  Piece

  Operational Orders sent from 4th Air Fleet to units in Romania outlining situation...

  Operational Orders sent from 4th Air Fleet to units in Romania outlining situation in Army Group South area. German front line at Sept 6. Focke Wulf Condor aircraft crashed soon after take-off: cause unknown. Transfer of glider personnel from Belgium…

  Held by

  The National Archives, Kew

  Date

  1941 Sept 7

  Reference

  HW 1/53

• Catalogue level

  Piece

  Soviet Comintern messages: ISCOT 1-100

  Soviet Comintern messages: ISCOT 1-100

  Held by

  The National Archives, Kew

  Date

  1944 Jan 21-1944 Apr 30

  Reference

  HW 17/53

• Catalogue level

  Piece

  Cypher Mission in Germany. Arrangements for post-war supervision of German diplomatic...

  Cypher Mission in Germany. Arrangements for post-war supervision of German diplomatic communications

  Held by

  The National Archives, Kew

  Date

  1944 Jun 21 - 1945 Aug 01

  Reference

  HW 53/55

• Catalogue level

  Piece

  DD(C) - Deputy Director (Civil) - historical papers. Mostly planning for post-war

  DD(C) - Deputy Director (Civil) - historical papers. Mostly planning for post-war

  Held by

  Creating government department or its successor

  Date

  1944 Oct 03 - 1946 Jan 15

  Reference

  HW 53/24

• Catalogue level

  Piece

  Records Italian, January 1942 - June 1944. Correspondence about the decryption of...

  Records Italian, January 1942 - June 1944. Correspondence about the decryption of Italian diplomatic messages

  Held by

  The National Archives, Kew

  Date

  1942 Mar 25 - 1944 Jun 22

  Reference

  HW 53/45

• Catalogue level

  Piece

  Canadian Liaison. Mainly correspondence between Denniston (Head of the Diplomatic...

  Canadian Liaison. Mainly correspondence between Denniston (Head of the Diplomatic and Commercial Section) and Kendrick (GC&CS representative in Ottawa)

  Held by

  The National Archives, Kew

  Date

  1943 Jan 08 - 1943 Dec 18

  Reference

  HW 53/40

• Catalogue level

  Piece

  Matapan Dossier. Notes on the contribution of Sigint to the defeat of the Italian...

  Matapan Dossier. Notes on the contribution of Sigint to the defeat of the Italian Navy at Matapan

  Held by

  The National Archives, Kew

  Date

  1940 Sep 25 - 1945 Oct 31

  Reference

  HW 50/53

• Catalogue level

  Piece

  Transport at Bletchley Park

  Transport at Bletchley Park

  Held by

  The National Archives, Kew

  Date

  1944 Jan 03 - 1944 Oct 17

  Reference

  HW 64/53

• Catalogue level

  Piece

  GC&CS Establishment Branch Records (Aldford House). Working accommodation of slipreaders...

  GC&CS Establishment Branch Records (Aldford House). Working accommodation of slipreaders at Aldford House and move to 56 Queen's Gate, London

  Held by

  The National Archives, Kew

  Date

  1945 Jun 18 - 1945 Oct 26

  Reference

  HW 53/52

• Catalogue level

  Piece

  DSH 16 - Codes and Cyphers. Technical crypt matters

  DSH 16 - Codes and Cyphers. Technical crypt matters

  Held by

  The National Archives, Kew

  Date

  1923 Jun 01 - 1945 Aug 31

  Reference

  HW 53/37

• Catalogue level

  Piece

  Italian naval messages

  Italian naval messages

  Held by

  The National Archives, Kew

  Date

  1940 Jun 13-1941 Jun 12

  Reference

  HW 18/53

• Catalogue level

  Piece

  Canadian Liaison. Mainly correspondence between Denniston (Head of the Diplomatic...

  Canadian Liaison. Mainly correspondence between Denniston (Head of the Diplomatic and Commercial Section) and Kendrick (GC&CS representative in Ottawa)

  Held by

  The National Archives, Kew

  Date

  1944 Jan 05 - 1944 Jun 29

  Reference

  HW 53/41

• Catalogue level

  Piece

  Liaison between Berkeley Street and Washington. Much of the correspondence is concerned...

  Much of the correspondence is concerned with the 'Reserved Series' of reports, which were not released to the USA (see also HW 37)

  Held by

  The National Archives, Kew

  Date

  1943 Nov 17 - 1944 Sep 28

  Reference

  HW 53/49