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  Piece

  ULTRA/AND/MSD. HMS Anderson military signals intelligence digest

  ULTRA/AND/MSD. HMS Anderson military signals intelligence digest

  Held by

  The National Archives, Kew

  Date

  1945 Aug 22-28

  Reference

  HW 4/22

• Catalogue level

  Piece

  The Indian Y plan describing the organisation of Indian signals intelligence

  The Indian Y plan describing the organisation of Indian signals intelligence

  Held by

  The National Archives, Kew

  Date

  1942 Mar 01 - 1942 Jun 30

  Reference

  HW 61/22

• Catalogue level

  Piece

  Naval accommodation and staffing at Bletchley Park

  Naval accommodation and staffing at Bletchley Park

  Held by

  The National Archives, Kew

  Date

  1939 Nov 10 - 1945 Oct 12

  Reference

  HW 64/22

• Catalogue level

  Piece

  Papers relating to the Administrative and AT Subcommittees Minutes of meetings of...

  Papers relating to the Administrative and AT SubcommitteesMinutes of meetings of the Administrative Subcommittee, which was set up to oversee matters relating to accommodation, personnel, communications and the supply of technical equipment to the Y …

  Held by

  The National Archives, Kew

  Date

  1941 Apr 02-1943 Oct 13

  Reference

  HW 42/22

• Catalogue level

  Piece

  Commercial reports

  Commercial reports

  Held by

  The National Archives, Kew

  Date

  1940 Mar 30-1940 Mar 30

  Reference

  HW 29/22

• Catalogue level

  Piece

  Security of electronic communications

  Security of electronic communications

  Held by

  Creating government department or its successor

  Date

  1955 Dec-1964 Oct

  Reference

  HW 9/22

• Catalogue level

  Piece

  German section: reports of German army and air force high grade machine decrypts

  German section: reports of German army and air force high grade machine decrypts

  Held by

  The National Archives, Kew

  Date

  July 2 1941-July 13 1941

  Reference

  HW 5/22

• Catalogue level

  Piece

  Noise Investigation Bureau. Reports on the interception and analysis of enemy transmissions...

  Noise Investigation Bureau. Reports on the interception and analysis of enemy transmissions and emissions unidentified as to type and function (probably meteorological balloons, radars, new methods of communication etc.). Collection was by UK ground …

  Held by

  The National Archives, Kew

  Date

  1942 Jan 13 - 1943 Dec 31

  Reference

  HW 62/22

• Catalogue level

  Piece

  Vol. IX The German Navy - The U-boat Arm Commanders

  Vol. IX The German Navy - The U-boat Arm Commanders

  Held by

  The National Archives, Kew

  Date

  1939 - 1945

  Reference

  HW 11/22

• Catalogue level

  Piece

  Decrypts of Comintern messages: Moscow, USSR, with London, Great Britain. (Described...

  Decrypts of Comintern messages: Moscow, USSR, with London, Great Britain. (Described at item level)

  Held by

  The National Archives, Kew

  Date

  1936 June-1937 Jan

  Reference

  HW 17/22

• Catalogue level

  Piece

  Air Staff Intelligence reports on the Spanish Civil War

  Air Staff Intelligence reports on the Spanish Civil War

  Held by

  The National Archives, Kew

  Date

  1938 Mar 07-1939 Apr 02

  Reference

  HW 22/3

• Catalogue level

  Piece

  Spanish naval order of battle

  Spanish naval order of battle

  Held by

  The National Archives, Kew

  Date

  1942 Nov 01-1942 Nov 30

  Reference

  HW 22/8

• Catalogue level

  Piece

  Spanish naval messages

  Spanish naval messages

  Held by

  The National Archives, Kew

  Date

  1942 Nov 05-1943 May 12

  Reference

  HW 22/10

• Catalogue level

  Piece

  Spanish naval messages and callsigns

  Spanish naval messages and callsigns

  Held by

  The National Archives, Kew

  Date

  1941 Jun 18-1943 Dec 28

  Reference

  HW 22/17

• Catalogue level

  Piece

  Spanish naval messages

  Spanish naval messages

  Held by

  The National Archives, Kew

  Date

  1943 Aug 03-1944 Jun 27

  Reference

  HW 22/16

• Catalogue level

  Piece

  Spanish naval messages

  Spanish naval messages

  Held by

  The National Archives, Kew

  Date

  1944 Mar 22-1944 Aug 01

  Reference

  HW 22/13

• Catalogue level

  Piece

  Spanish naval messages

  Spanish naval messages

  Held by

  The National Archives, Kew

  Date

  1944 Aug 01-1945 May 13

  Reference

  HW 22/14

• Catalogue level

  Piece

  Spanish naval messages

  Spanish naval messages

  Held by

  The National Archives, Kew

  Date

  1943 May 12-1943 Oct 13

  Reference

  HW 22/11

• Catalogue level

  Piece

  Spanish naval messages and callsigns (SS zip 201-299)

  Spanish naval messages and callsigns (SS zip 201-299)

  Held by

  The National Archives, Kew

  Date

  1945 May 24-1945 Sep 20

  Reference

  HW 22/19

• Catalogue level

  Piece

  Reports on the Spanish army, Spanish naval callsigns and results of RAF bombing raid...

  Reports on the Spanish army, Spanish naval callsigns and results of RAF bombing raid on German U-boat factory

  Held by

  The National Archives, Kew

  Date

  1941 Oct 31-1945 May 19

  Reference

  HW 22/24