Catalogue search results

Filters

Results

• Catalogue level

  Piece

  Dossier on Security at Bletchley Park. W/T security and deception; security dissemination...

  Dossier on Security at Bletchley Park. W/T security and deception; security dissemination (ULTRA regulations) and breaches of Sigint security; personnel, vetting, breaches, Official Secrets Act; Sigint nomenclature; Interservice Cypher Security Commi…

  Held by

  The National Archives, Kew

  Date

  1939 Sep 01 - 1945 Aug 30

  Reference

  HW 50/22

• Catalogue level

  Piece

  Dossier on RASTER. Notes on RASTER, a German Air, Army and Police stencil transposition...

  Dossier on RASTER. Notes on RASTER, a German Air, Army and Police stencil transposition cypher, introduced in September 1944 as the type of non-machine cypher most closely associated in use and content with ENIGMA

  Held by

  The National Archives, Kew

  Date

  1944 Mar 01 - 1945 Jan 01

  Reference

  HW 50/55

• Catalogue level

  Piece

  Japanese Naval/Air-Ground Sigint. Historical notes on the collection and processing...

  Japanese Naval/Air-Ground Sigint. Historical notes on the collection and processing of the communications of Japanese naval aircraft

  Held by

  The National Archives, Kew

  Date

  1943 Apr 11 - 1945 Aug 26

  Reference

  HW 50/77

• Catalogue level

  Piece

  Interception and Sets - Air, Army, Navy. Mainly statistics on availability of operators...

  Interception and Sets - Air, Army, Navy. Mainly statistics on availability of operators and receiver positions worldwide, but also some extracts from policy documents eg 'Control of Army Fixed Y Stations' and 'Naval Y Interception European and Japane…

  Held by

  The National Archives, Kew

  Date

  1939 Sep 01 - 1945 Aug 30

  Reference

  HW 50/33

• Catalogue level

  Piece

  Synopsis on 'Y' [Sigint] at Sea (European Naval). Notes on the establishment of sea-going...

  Synopsis on 'Y' [Sigint] at Sea (European Naval). Notes on the establishment of sea-going linguist radio operators for the interception of German VHF radio telephony

  Held by

  The National Archives, Kew

  Date

  1941 Apr 04 - 1942 Jul 22

  Reference

  HW 50/38

• Catalogue level

  Piece

  Dossier on Hollerith Machinery. Historical notes on use of Hollerith equipment under...

  Dossier on Hollerith Machinery. Historical notes on use of Hollerith equipment under Mr Freeborn in Hut 7 at GC&CS This was provided by the British Tabulating Machine Company

  Held by

  The National Archives, Kew

  Date

  1935 Jan 01 - 1945 Jul 02

  Reference

  HW 50/72

• Catalogue level

  Piece

  Notes on ISSIS [Inter-Service Special Intelligence School] and Japanese NS [Naval...

  Notes on ISSIS [Inter-Service Special Intelligence School] and Japanese NS [Naval Section] Linguists and Courses. Historical notes on the training of linguists (mainly in Japanese) at the ISSIS in Bedford

  Held by

  The National Archives, Kew

  Date

  1940 Oct 16 - 1945 Nov 10

  Reference

  HW 50/78

• Catalogue level

  Piece

  Pearl Harbour - The Evidence for: The paper prepared for Winston Churchill's history...

  Pearl Harbour - The Evidence for: The paper prepared for Winston Churchill's history on information available to the British Cabinet before Pearl Harbour (the BJ [diplomatic] telegrams exchanged between America and the British giving warnings of impe…

  Held by

  The National Archives, Kew

  Date

  1941 Feb 01 - 1941 Dec 07

  Reference

  HW 50/52

• Catalogue level

  Piece

  Signals from Naval Section, Government Code and Cypher School to Cdr O'Callaghan's...

  Signals from Naval Section, Government Code and Cypher School to Cdr O'Callaghan's sigint party in Italy

  Held by

  The National Archives, Kew

  Date

  1943 Aug 16-1943 Oct 27

  Reference

  HW 41/50

• Catalogue level

  Piece

  Italian naval messages

  Italian naval messages

  Held by

  The National Archives, Kew

  Date

  1939 Aug 17-1939 Nov 27

  Reference

  HW 18/50

• Catalogue level

  Piece

  GRU Naval (Soviet Naval Intelligence) Attaché Traffic: Moscow with Stockholm, Sweden....

  GRU Naval (Soviet Naval Intelligence) Attaché Traffic: Moscow with Stockholm, Sweden. (Described at item level)

  Held by

  The National Archives, Kew

  Date

  1941 Feb 17-1942 Sept 26

  Reference

  HW 15/50

• Catalogue level

  Piece

  GC&CS European Naval Section Extracts and Dossiers collected apparently for historical...

  GC&CS European Naval Section Extracts and Dossiers collected apparently for historical purposes and/or research

  Held by

  The National Archives, Kew

  Date

  1939 Sep 01 - 1945 Aug 30

  Reference

  HW 50/15

• Catalogue level

  Piece

  GC&CS Japanese Naval Section Extracts from Supporting Histories apparently for historical...

  GC&CS Japanese Naval Section Extracts from Supporting Histories apparently for historical purposes and/or research. Notes of sources and drafts in preparation for the writing of the history of the Naval Section

  Held by

  The National Archives, Kew

  Date

  1942 Jan 16 - 1945 Jul 31

  Reference

  HW 50/16

• Catalogue level

  Piece

  Bletchley Park Records. Correspondence concerning the location and retention or destruction...

  Bletchley Park Records. Correspondence concerning the location and retention or destruction of GC&CS World War II historical records

  Held by

  The National Archives, Kew

  Date

  1945 Aug 20 - 1950 Jul 07

  Reference

  HW 50/5

• Catalogue level

  Piece

  JIB [Joint Intelligence Bureau], JIC (Joint Intelligence Committee] and JSIB [Joint...

  JIB [Joint Intelligence Bureau], JIC (Joint Intelligence Committee] and JSIB [Joint Signals Intelligence Board] (India and SEAC): origin, contribution, functions and Sigint history. Notes on history of Sigint high level controlling organisation

  Held by

  The National Archives, Kew

  Date

  1934 Nov 07 - 1945 Sep 25

  Reference

  HW 50/24

• Catalogue level

  Piece

  History of the Fish Section. History of the section responsible for decryption of...

  History of the Fish Section. History of the section responsible for decryption of German radio printer transmissions. Individual systems or links were given names of fish such as 'Tunny', 'Sturgeon', 'Bream' and 'Stickleback'

  Held by

  The National Archives, Kew

  Date

  1942 Jun 01 - 1945 May 31

  Reference

  HW 50/63

• Catalogue level

  Piece

  Dossiers on Air Section GC&CS

  Dossiers on Air Section GC&CS

  Held by

  The National Archives, Kew

  Date

  1936 Apr 01 - 1945 May 06

  Reference

  HW 50/62

• Catalogue level

  Piece

  RAF Field Units in Mediterranean and Western Europe, including Mediterranean and...

  RAF Field Units in Mediterranean and Western Europe, including Mediterranean and Caucasus Y Plan 1943. Notes on the history of RAF Sigint Units

  Held by

  The National Archives, Kew

  Date

  1941 Jun 21 - 1945 Feb 20

  Reference

  HW 50/49

• Catalogue level

  Piece

  Communications Dossier No 3, Far East - USA - Japanese Army/Air and Naval Sigint....

  Communications Dossier No 3, Far East - USA - Japanese Army/Air and Naval Sigint. Details of world-wide communications networks set up to support the Sigint effort against Japan

  Held by

  The National Archives, Kew

  Date

  1942 Apr 06 - 1945 Aug 05

  Reference

  HW 50/35

• Catalogue level

  Piece

  Use of Japanese Weather Reports in Eastern Theatre 1944-1945. A description of the...

  Use of Japanese Weather Reports in Eastern Theatre 1944-1945. A description of the production of Japanese weather intelligence and its distribution to Naval and to a limited extent Air authorities

  Held by

  The National Archives, Kew

  Date

  1944 Jan 01 - 1945 Aug 30

  Reference

  HW 50/75