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  Piece

  The Japanese Merchant/Navy Liaison System Party (translation) (JN 40) by Mr. G.A....

  The Japanese Merchant/Navy Liaison System Party (translation) (JN 40) by Mr. G.A. Peters.Description of the work of the party engaged in the translation of Japanese merchant shipping messages.

  Held by

  The National Archives, Kew

  Date

  1942 Sep 01-1945 Aug 31

  Reference

  HW 8/53

• Catalogue level

  Piece

  German support for El Hiba tribe, fighting the French in French Morocco

  German support for El Hiba tribe, fighting the French in French Morocco

  Held by

  The National Archives, Kew

  Date

  1916-1918

  Reference

  HW 7/29

• Catalogue level

  Piece

  Miscellaneous telegrams on funding of German clandestine subversive activities in...

  Miscellaneous telegrams on funding of German clandestine subversive activities in French Morocco

  Held by

  The National Archives, Kew

  Date

  1915-1918

  Reference

  HW 7/28

• Catalogue level

  Piece

  German pay-off of Turkish officers implicated in subversive activities in Morocco...

  German pay-off of Turkish officers implicated in subversive activities in Morocco and negotiations with Sheik Aziz of Egypt

  Held by

  The National Archives, Kew

  Date

  1916 - 1918

  Reference

  HW 7/32

• Catalogue level

  Piece

  Room 40 decrypts: telegrams from Berlin via radio transmitter at Nauen to German...

  Room 40 decrypts: telegrams from Berlin via radio transmitter at Nauen to German embassies in South America and East Africa, May - June

  Held by

  The National Archives, Kew

  Date

  1916

  Reference

  HW 7/34

• Catalogue level

  Piece

  Room 40 decrypts: Greek, Spanish and Swiss diplomatic telegrams, Dec-Jan

  Room 40 decrypts: Greek, Spanish and Swiss diplomatic telegrams, Dec-Jan

  Held by

  The National Archives, Kew

  Date

  1916-1917

  Reference

  HW 7/16

• Catalogue level

  Piece

  WF Clarke's personal papers: correspondence between War Office and Admiralty on operational...

  WF Clarke's personal papers: correspondence between War Office and Admiralty on operational use of signals intelligence from German Zeppelins

  Held by

  The National Archives, Kew

  Date

  1915 - 1917

  Reference

  HW 7/24

• Catalogue level

  Piece

  German codebook number 3512

  German codebook number 3512

  Held by

  The National Archives, Kew

  Date

  [c1910]

  Reference

  HW 7/26

• Catalogue level

  Piece

  WF Clarke's personal papers: background to sinking of HMS Hampshire, with Lord Kitchener...

  WF Clarke's personal papers: background to sinking of HMS Hampshire, with Lord Kitchener on board in June 1916, prepared for Admiral Jellicoe

  Held by

  The National Archives, Kew

  Date

  [c1924]

  Reference

  HW 7/23

• Catalogue level

  Piece

  Room 40 US decrypts: diplomatic telegrams between Washington and US ambassadors in...

  Room 40 US decrypts: diplomatic telegrams between Washington and US ambassadors in 16, mainly European capitals, relating to the German declaration of unlimited submarine warfare on Feb 1 and subsequent breaking off by US

  Held by

  The National Archives, Kew

  Date

  1917 Jan - Mar

  Reference

  HW 7/20

• Catalogue level

  Piece

  Room 40 German decrypts: diplomatic telegrams between Berlin and Mexico routed via...

  Room 40 German decrypts: diplomatic telegrams between Berlin and Mexico routed via Swedish diplomatic channels

  Held by

  The National Archives, Kew

  Date

  1916

  Reference

  HW 7/7

• Catalogue level

  Piece

  Room 40 German decrypts: diplomatic telegrams including Zimmerman message of Jan...

  Room 40 German decrypts: diplomatic telegrams including Zimmerman message of Jan 16

  Held by

  The National Archives, Kew

  Date

  1917

  Reference

  HW 7/8

• Catalogue level

  Piece

  Contribution to the History of German Naval Warfare, 1914-1918: volume two, The Fleet...

  Contribution to the History of German Naval Warfare, 1914-1918: volume two, The Fleet in Being, written by Birch and Clarke

  Held by

  The National Archives, Kew

  Date

  1914-1918

  Reference

  HW 7/3

• Catalogue level

  Piece

  History of MI 1B. Anonymous and undated, but written between November 1919 and January...

  History of MI 1B. Anonymous and undated, but written between November 1919 and January 1923. Author possibly Major Godfrey Leveson Brooke-Hunt, member of MI 1B from October 1917 and Head of the Section 1919-1922

  Held by

  The National Archives, Kew

  Date

  1919 Jan 01 - 1923 Dec 31

  Reference

  HW 7/35

• Catalogue level

  Piece

  Periodical reports on German wireless activity on the Western Front . 40 was missing...

  40 was missing at transfer

  Held by

  The National Archives, Kew

  Date

  1943 Aug 1-1944 May 24

  Reference

  HW 13/153

• Catalogue level

  Piece

  Richtverbindungen (RV) - UHF line of sight communications. Described at item level

  Richtverbindungen (RV) - UHF line of sight communications. Described at item level

  Held by

  The National Archives, Kew

  Date

  1944 Dec 2-1945 May 1

  Reference

  HW 13/202

• Catalogue level

  Piece

  Hut 3 reports on strategic information concernig the German Army for the Hut 3 Military...

  Hut 3 reports on strategic information concernig the German Army for the Hut 3 Military Advisors- based on German Army high-grade Sigint sources . 28 was missing at transfer

  Held by

  The National Archives, Kew

  Date

  1943 Aug 8-1945 Feb 17

  Reference

  HW 13/157

• Catalogue level

  Piece

  Bound volume of BP GP periodic summaries: reports 27-40 include details of massed...

  Bound volume of BP GP periodic summaries: reports 27-40 include details of massed shootings of Jews and Russians on Eastern Front 1941-42, even so figures for executions are incomplete as in Sept 1941 Germans decided details

  Held by

  The National Archives, Kew

  Date

  1940-1945

  Reference

  HW 16/6

• Catalogue level

  Piece

  Memo to Collectors in Charge: Revised Form AG/C156

  Memo to Collectors in Charge: Revised Form AG/C156

  Held by

  The National Archives, Kew

  Date

  1961

  Reference

  IR 40/14297

• Catalogue level

  Piece

  Allied Sigint Policy and Organisation by Nigel de Grey. Chapter I Growth and Policy...

  Allied Sigint Policy and Organisation by Nigel de Grey. Chapter I Growth and Policy of British Sigint up to 1942. Chapter II Organisation and Policy from 1942 onwards. Chapter III The GC&CS Organisation and Evolution.Includes table of contents fo…

  Held by

  The National Archives, Kew

  Date

  1914 Aug 01-1945 Aug 30

  Reference

  HW 43/75