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  Piece

  Dossier of Papers on the Distribution and Handling of Intelligence from Diplomatic...

  Dossier of Papers on the Distribution and Handling of Intelligence from Diplomatic and Commercial Sources. Instructions concerning addressees of reports and lists of authorised recipients

  Held by

  The National Archives, Kew

  Date

  1941 Dec 01 - 1945 Jul 30

  Reference

  HW 50/19

• Catalogue level

  Piece

  Mediterranean and Caucasus Y Plan. Notes on planning of Sigint support for operations

  Mediterranean and Caucasus Y Plan. Notes on planning of Sigint support for operations

  Held by

  The National Archives, Kew

  Date

  1942 Nov 27 - 1943 Sep 14

  Reference

  HW 50/44

• Catalogue level

  Piece

  Dossier on V Weapons - VERA Traffic. Notes concerning intelligence on the German...

  Dossier on V Weapons - VERA Traffic. Notes concerning intelligence on the German V-2 ballistic missile

  Held by

  The National Archives, Kew

  Date

  1943 Sep 25 - 1945 Jan 09

  Reference

  HW 50/56

• Catalogue level

  Piece

  Use of private cars, motor cycles and pedal cycles for official business

  Use of private cars, motor cycles and pedal cycles for official business

  Held by

  The National Archives, Kew

  Date

  1940 Sep 21 - 1942 Oct 21

  Reference

  HW 64/50

• Catalogue level

  Piece

  GC&CS Army and Air Force Sigint Volume VII: German Cryptographic Systems and their...

  GC&CS Army and Air Force Sigint Volume VII: German Cryptographic Systems and their Solution I by Lt Col F S Thompson

  Held by

  Creating government department or its successor

  Date

  1939 Sep 01 - 1945 Aug 30

  Reference

  HW 43/50

• Catalogue level

  Piece

  Details of the German fighter patrol code book derived from traffic analysis and...

  Details of the German fighter patrol code book derived from traffic analysis and voice transcription

  Held by

  The National Archives, Kew

  Date

  1941 May 02-1943 Jul 12

  Reference

  HW 45/50

• Catalogue level

  Piece

  Hut 6 Reports. Historical notes on the Army and Air crypt section

  Hut 6 Reports. Historical notes on the Army and Air crypt section

  Held by

  The National Archives, Kew

  Date

  1939 Sep 12 - 1945 Apr 28

  Reference

  HW 50/61

• Catalogue level

  Piece

  Foreign Office case to Treasury supporting bid to increase pay of GCCS morse expert,...

  Foreign Office case to Treasury supporting bid to increase pay of GCCS morse expert, Lt Lambert

  Held by

  The National Archives, Kew

  Date

  1925

  Reference

  HW 3/50

• Catalogue level

  Piece

  Soviet Comintern messages: Service 133: Moscow to and from Poland, 25/1/1944-13/07/1944....

  Soviet Comintern messages: Service 133: Moscow to and from Poland, 25/1/1944-13/07/1944. Moscow, no callsigns, used message serial numbers 1-68 (some errors). Poland, no callsigns; few messages intercepted. Service 143: Moscow to and from Poland, 29/…

  Held by

  The National Archives, Kew

  Date

  1943 Oct 29-1944 Oct 22

  Reference

  HW 17/50

• Catalogue level

  Piece

  Italian Air Transport Services: civil aircraft markings

  Italian Air Transport Services: civil aircraft markings

  Held by

  The National Archives, Kew

  Date

  1943 Mar 10

  Reference

  HW 21/50

• Catalogue level

  Piece

  Decrypts of Japanese army and army air force messages

  Decrypts of Japanese army and army air force messages

  Held by

  The National Archives, Kew

  Date

  1944 Aug 01-1945 Jun 10

  Reference

  HW 52/50

• Catalogue level

  Piece

  Communications security

  Communications security

  Held by

  The National Archives, Kew

  Date

  1943 Sep 03 - 1943 Oct 27

  Reference

  HW 51/50

• Catalogue level

  Piece

  Reports of Japanese army air decrypts with subject headers

  Reports of Japanese army air decrypts with subject headers

  Held by

  The National Archives, Kew

  Date

  1944 Aug 09-1944 Oct 31

  Reference

  HW 28/50

• Catalogue level

  Piece

  Minutes of the Meeting of the Editorial Committee of the Naval Section History with...

  Minutes of the Meeting of the Editorial Committee of the Naval Section History with Historical Committee 'Y' and minutes of successor committees. Minutes of meetings to progress all aspects of work on the writing of the history of British naval sigin…

  Held by

  The National Archives, Kew

  Date

  1945 Jun 12 - 1947 Nov 11

  Reference

  HW 50/2

• Catalogue level

  Piece

  Dossiers on ENIGMA. Historical notes on the cryptographic attack on ENIGMA. Uncle...

  Dossiers on ENIGMA. Historical notes on the cryptographic attack on ENIGMA. Uncle D [Umkehrwalze D] and ENIGMA Uhr; pre-war history of ENIGMA machine; general u-boat key (SHARK) - delays in breaking

  Held by

  The National Archives, Kew

  Date

  1936 Apr 28 - 1945 May 06

  Reference

  HW 50/69

• Catalogue level

  Piece

  Historical War Records. Draft history of World War II Sigint

  Historical War Records. Draft history of World War II Sigint

  Held by

  The National Archives, Kew

  Date

  1942 Mar 01 - 1945 Aug 30

  Reference

  HW 50/21

• Catalogue level

  Piece

  War Office Stations at Kedleston Hall and Bishops Waltham. Historical notes on two...

  War Office Stations at Kedleston Hall and Bishops Waltham. Historical notes on two military intercept stations

  Held by

  The National Archives, Kew

  Date

  1942 May 28 - 1944 Nov 30

  Reference

  HW 50/82

• Catalogue level

  Piece

  Dossier on Army Sigint and War Office - Functions, Organisation and Establishment....

  Dossier on Army Sigint and War Office - Functions, Organisation and Establishment. Army Sigint (pre-war and 1914-1918 War); Conducts of Work, Organisation and Responsibilities, MI Directorate; MI Sections; Miscellaneous Information from All Sources; …

  Held by

  The National Archives, Kew

  Date

  1914 Aug 01 - 1945 Sep 30

  Reference

  HW 50/40

• Catalogue level

  Piece

  Dossier on Russian Liaison. Notes on Sigint cooperation with the Russians during...

  Dossier on Russian Liaison. Notes on Sigint cooperation with the Russians during World War II (Crankshaw's mission to Moscow). The manuscript in pencil is in Nigel de Grey's handwriting

  Held by

  The National Archives, Kew

  Date

  1941 Jun 01 - 1945 Feb 10

  Reference

  HW 50/11

• Catalogue level

  Piece

  Dossier on EXOTICS (covername for W/T traffic from all countries other than Germany...

  Dossier on EXOTICS (covername for W/T traffic from all countries other than Germany and Japan). Post-war planning

  Held by

  Creating government department or its successor

  Date

  1944 Aug 03 - 1945 Sep 20

  Reference

  HW 50/23