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• Government Code and Cypher School: Cryptographic Co-ordination and Records: Bulgarian...

  Held by

  The National Archives, Kew

  Date

  1945

  Reference

  HW 24

• Government Code and Cypher School: Diplomatic Section: Reports to British Agencies...

  Held by

  The National Archives, Kew

  Date

  1943

  Reference

  HW 38

• Government Code and Cypher School: Naval Section: Reports of German, Italian, French,...

  Held by

  Date

  1938-1945

  Reference

  HW 18

• Government Code and Cypher School: Diplomatic and Commercial Sections: Reports of...

  Held by

  Date

  1942-1945

  Reference

  HW 32

• Government Code and Cypher School: Military Section: Reports of Croatian Military...

  Held by

  The National Archives, Kew

  Date

  1944-1945

  Reference

  HW 26

• Government Code and Cypher School: Air Section: Reports on Italian and Other Foreign...

  Held by

  The National Archives, Kew

  Date

  1936-1944

  Reference

  HW 21

• Government Code and Cypher School: Military Section: Reports of Japanese Army Decrypts

  Held by

  The National Archives, Kew

  Date

  1941-1945

  Reference

  HW 33

• Government Code and Cypher School: Tactical Sigint forwarded to Allied Commands:...

  Held by

  The National Archives, Kew

  Date

  1940-1945

  Reference

  HW 20

• Government Code and Cypher School: Special Liaison Units: Histories

  Held by

  The National Archives, Kew

  Date

  1940-1945

  Reference

  HW 49

• Government Code and Cypher School: Establishment Branch: Records

  Held by

  The National Archives, Kew

  Date

  1938-1946

  Reference

  HW 64

• Government Code and Cypher School: Diplomatic Section and Commercial Section: Records

  Held by

  The National Archives, Kew

  Date

  1923-1945

  Reference

  HW 53

• Government Code and Cypher School: Anglo-French Liaison Records

  Held by

  The National Archives, Kew

  Date

  1938-1945

  Reference

  HW 65

• Government Code and Cypher School: Staffing, Recruitment and Conditions of Service...

  Held by

  The National Archives, Kew

  Date

  1927-1945

  Reference

  HW 72

• Government Code and Cypher School: Japanese Section: Diplomatic Intelligence Summary...

  Held by

  The National Archives, Kew

  Date

  1945

  Reference

  HW 10

• Government Code and Cypher School and predecessors: Personal Papers, Unofficial Histories,...

  Held by

  The National Archives, Kew

  Date

  1914-1945

  Reference

  HW 3

• Government Code and Cypher School: Services Field Signals Intelligence Units: Reports...

  Held by

  The National Archives, Kew

  Date

  1914-1977

  Reference

  HW 41

• Government Code and Cypher School: Naval Section: Reports of Japanese Naval Decrypts

  Held by

  The National Archives, Kew

  Date

  1940-1945

  Reference

  HW 23

• Government Code and Cypher School: German Police Section: Decrypts of German Police...

  Held by

  The National Archives, Kew

  Date

  1935-1945

  Reference

  HW 16

• Government Code and Cypher School: Second World War Intelligence Summaries Based...

  Held by

  The National Archives, Kew

  Date

  1918-1945

  Reference

  HW 13

• War Office: Military Intelligence Papers (Special Series) First World War

  Held by

  The National Archives, Kew

  Date

  1916-1923

  Reference

  WO 160