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• Accessions administration: HW 30

  Held by

  The National Archives, Kew

  Date

  1999 Jan 1 - 2000 Dec 31

  Reference

  PRO 57/15761

• Company No: 02169480; HW Waverley (No 30) Ltd. Incorporated in 1987. Dissolved in...

  Held by

  The National Archives, Kew

  Date

  1987 Jan 1 - 2003 Dec 31

  Reference

  BT 31/107048

• Page: 30. Name: HW Langford. Occupation: Mine Guard. Place of accident: Treforest...

  Held by

  The National Archives, Kew

  Date

  1919 July 8

  Reference

  RAIL 684/119/253

• General records of the Government Code and Cypher School

  Held by

  Date

  1914-1979

  Reference

• Government Code and Cypher School: Japanese Commercial Section: Reports of Plain...

  Held by

  The National Archives, Kew

  Date

  1944-1945

  Reference

  HW 30

• Records of WF Clarke of Room 40 and Head of Naval Section, Government Code and Cypher...

  Held by

  The National Archives, Kew

  Date

  1925-1927

  Reference

  HW 3/182

• The Admiralty, Whitehall, London: one article and six drawings entitled: 'The New...

  Held by

  The National Archives, Kew

  Date

  1895 Jan 01 - 1895 Dec 31

  Reference

  T 376/358

• San Francisco: Passports for HIRSHFELD and SHEVTEL.

  Held by

  The National Archives, Kew

  Date

  1944 Mar 21

  Reference

  HW 15/30/30

• Middle East and North Africa - CBME [Combined Bureau Middle East]. Notes, extracts...

  Held by

  The National Archives, Kew

  Date

  1924 Mar 01 - 1945 Apr 19

  Reference

  HW 50/30

• Commercial messages concerning Japanese shipping and cargoes

  Held by

  The National Archives, Kew

  Date

  1945 Oct 02-1945 Oct 30

  Reference

  HW 30/18

• Telegrams to and from SSD (US Army Sigint personnel working in England). Correspondence...

  Held by

  The National Archives, Kew

  Date

  1943 Jul 18 - 1943 Dec 04

  Reference

  HW 53/30

• Commercial messages concerning Japanese shipping and cargoes

  Held by

  The National Archives, Kew

  Date

  1945 Sep 01-1945 Sep 29

  Reference

  HW 30/17

• Details of German cyphers

  Held by

  The National Archives, Kew

  Date

  1941 Nov 01 - 1942 Dec 31

  Reference

  HW 51/30

• Reports in the series MKA/2501 to MKA/2750. Number MKA/2748 not taken up.

  Held by

  The National Archives

  Date

  1942 Aug 22-1942 Aug 25

  Reference

  HW 20/30

• MGB (Soviet Ministry of State Security) Traffic: Moscow with San Francisco, USA....

  Held by

  The National Archives, Kew

  Date

  1944 Jan 2-1944 Dec 31

  Reference

  HW 15/30

• Decrypts of intercepted diplomatic communications. Afghanistan: 9196, 9255. Brazil:...

  Held by

  The National Archives, Kew

  Date

  1922 Jan

  Reference

  HW 12/30

• Commercial reports

  Held by

  The National Archives, Kew

  Date

  1940 May 15-1940 May 22

  Reference

  HW 29/30

• Y Committees, Y Board and Sigint Board - organisations and origins

  Held by

  The National Archives, Kew

  Date

  1924 Jan 01-1945 Dec 31

  Reference

  HW 42/30

• RAF Wireless Units, Sets and Coverage Returns 1944-1945. Weekly returns from mobile...

  Held by

  The National Archives, Kew

  Date

  1944 Nov 18 - 1945 Jun 08

  Reference

  HW 62/30

• Vol. XVII The Naval War 1939-1945 Introduction by Lieutenant Commander L A Griffiths,...

  Held by

  The National Archives, Kew

  Date

  1939 - 1945

  Reference

  HW 11/30