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• Sheet Number Parts HW 73 SE and HW 83 SW inset HW 62 NW and HW 63 SW

  Held by

  The National Archives, Kew

  Date

  1973

  Reference

  OS 42/117

• Sheet Number HW 73 SE and 83 SW parts of, inset of 62 NW and 63 SW on Ordnance Survey...

  Held by

  The National Archives, Kew

  Date

  1975 May 16 - 1998 Dec 21

  Reference

  OS 42/21098

• General records of the Government Code and Cypher School

  Held by

  Date

  1914-1979

  Reference

• Government Code and Cypher School: Wireless Telegraphy Coordinator Section: Records

  Held by

  The National Archives, Kew

  Date

  1942-1945

  Reference

  HW 63

• Triangulation (Trig) Station number NC/35/T2. Trig name: Sula Sgeir: tertiary mark....

  Held by

  The National Archives, Kew

  Date

  1935 Jan 01 - 2008 Dec 31

  Reference

  OS 69/363

• GC&CS Periodical Reports. WTC Weekly Reports 1943-1945. Weekly reports from head...

  Held by

  The National Archives, Kew

  Date

  1943 Feb 20 - 1945 Oct 22

  Reference

  HW 63/1

• GC&CS Records: Hut 3 Routeing Instructions, Volume 2. Instructions and guidance on...

  Held by

  The National Archives, Kew

  Date

  1943 Aug 04 - 1945 May 16

  Reference

  HW 63/8

• Enemy exploitation of Naval low grade codes and cyphers: miscellaneous reports and...

  Held by

  The National Archives, Kew

  Date

  1942 Oct 29 - 1945 Mar 06

  Reference

  HW 40/63

• Decrypts of Japanese army and army air force messages

  Held by

  The National Archives, Kew

  Date

  1945 Jun 01-1945 Jul 31

  Reference

  HW 52/63

• Reports of German naval activity in the area of the English Channel and the southern...

  Held by

  The National Archives, Kew

  Date

  1941 Oct 31-1944 Nov 25

  Reference

  HW 18/63

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

  Held by

  The National Archives, Kew

  Date

  1942 Jun 01 - 1945 May 31

  Reference

  HW 50/63

• GC&CS Records: 'Hut Six' code. Hut 6 Watch Log. Hut 6 was responsible for decyphering...

  Held by

  The National Archives, Kew

  Date

  1945 Feb 25 - 1945 May 12

  Reference

  HW 63/9

• The Japanese Language School (short courses) by Mr A.T. Watson and Mr H. Reed. A...

  Held by

  The National Archives, Kew

  Date

  1943 Aug 17-1945 Jul 31

  Reference

  HW 8/63

• 3G Notes - Nos 1, 3, 5, 7. Short Forms of Address in the Mediterranean Area. Lists...

  Held by

  The National Archives, Kew

  Date

  1944 Dec 07 - 1945 Mar 14

  Reference

  HW 63/3

• Thirteen Central Telegraph Office staff to transfer to GCCS wef 1 Apr

  Held by

  The National Archives, Kew

  Date

  1937

  Reference

  HW 3/63

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

  Held by

  The National Archives, Kew

  Date

  Feb 2 1942-Feb 14 1942

  Reference

  HW 5/63

• Commercial reports. Report number 14104 missing at transfer

  Held by

  The National Archives, Kew

  Date

  1940 Nov 18-1940 Nov 20

  Reference

  HW 29/63

• Reports of decrypts of Japanese military attachés messages

  Held by

  The National Archives, Kew

  Date

  1944 Nov 01-1944 Nov 06

  Reference

  HW 35/63

• Foreign Intelligence: Yugoslavia

  Held by

  The National Archives, Kew

  Date

  1930 Nov 22-1931 Apr 15

  Reference

  HW 2/63

• 69201-70651

  Held by

  The National Archives, Kew

  Date

  1943 Sep 28-1943 Oct 23

  Reference

  HW 19/63