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  Piece

  Visit to USA, November 1943 - January 1944. Visit of sub-section heads Thornett and...

  Visit to USA, November 1943 - January 1944. Visit of sub-section heads Thornett and Filby to Washington

  Held by

  The National Archives, Kew

  Date

  1943 Oct 30 - 1944 Jan 10

  Reference

  HW 53/43

• Catalogue level

  Piece

  DSH 17 - Supplementary Crypotological Reports Nos. 1-9. Technical crypt reports

  DSH 17 - Supplementary Crypotological Reports Nos. 1-9. Technical crypt reports

  Held by

  The National Archives, Kew

  Date

  1944 Mar 01 - 1945 Mar 31

  Reference

  HW 53/36

• Catalogue level

  Piece

  French Liaison. Re-establishment of liaison with French Sigint (in North Africa)...

  French Liaison. Re-establishment of liaison with French Sigint (in North Africa) through Commandant Black and move of Black and his team to Paris in September 1944 and reappearance of 'Bertie' [Bertrand] in June 1944

  Held by

  The National Archives, Kew

  Date

  1943 May 06 - 1945 Aug 27

  Reference

  HW 53/54

• Catalogue level

  Piece

  German Diplomatic, January 1942 - June 1944. Minutes and correspondence concerning...

  German Diplomatic, January 1942 - June 1944. Minutes and correspondence concerning the decryption of the German Diplomatic 'FLORADORA' cypher

  Held by

  The National Archives, Kew

  Date

  1942 Jan 10 - 1944 May 27

  Reference

  HW 53/44

• Catalogue level

  Piece

  Italian Mission - CXG Signals to and from Rome. GC&CS Berkeley Street correspondence...

  Italian Mission - CXG Signals to and from Rome. GC&CS Berkeley Street correspondence by signal with the Cypher Security Mission responsible for overseeing Italian usage of diplomatic cyphers in Rome

  Held by

  The National Archives, Kew

  Date

  1944 Jul 29 - 1945 May 23

  Reference

  HW 53/27

• Catalogue level

  Piece

  V Reports. Notes and correspondence concerning the setting up of a central cryptographic...

  V Reports. Notes and correspondence concerning the setting up of a central cryptographic index at Bletchley Park under Professor E R Vincent

  Held by

  The National Archives, Kew

  Date

  1942 Dec 19 - 1943 Mar 10

  Reference

  HW 53/13

• Catalogue level

  Piece

  PDH 4 cryptographic reports exchanged with CCR (Cryptographic Co-ordination and Records...

  PDH 4 cryptographic reports exchanged with CCR (Cryptographic Co-ordination and Records Section at Bletchley Park). Minutes and technical reports on crypographic matters

  Held by

  The National Archives, Kew

  Date

  1944 Feb 20 - 1944 Dec 20

  Reference

  HW 53/1

• Catalogue level

  Piece

  Italian Mission - transmission misdemeanours. Correspondence concerning Italian post-armistice...

  Italian Mission - transmission misdemeanours. Correspondence concerning Italian post-armistice use of diplomatic cyphers

  Held by

  The National Archives, Kew

  Date

  1944 Apr 05 - 1945 May 26

  Reference

  HW 53/8

• Catalogue level

  Piece

  DSH 13 - Diplomatic and Commercial miscellaneous papers. Correspondence on message...

  DSH 13 - Diplomatic and Commercial miscellaneous papers. Correspondence on message collection and exchange, crypt processing and distribution of final reports

  Held by

  The National Archives, Kew

  Date

  1943 Jan 04 - 1943 Dec 28

  Reference

  HW 53/16

• Catalogue level

  Piece

  Italian Mission - Mr Catty and Mr Duke's reports. Reports by the Cypher Security...

  Italian Mission - Mr Catty and Mr Duke's reports. Reports by the Cypher Security Mission in Rome responsible for overseeing Italian diplomatic cypher usage

  Held by

  The National Archives, Kew

  Date

  1944 Oct 06 - 1945 Jan 05

  Reference

  HW 53/26

• Catalogue level

  Piece

  BP staff recruitment, liaison with Cambridge University, staff for DF Exchange at...

  BP staff recruitment, liaison with Cambridge University, staff for DF Exchange at BP; investigations into careless talk; HAS bids for promotion and salary increases for named AS personnel at BP, Cheadle and in ME; WRNS Quarters Officers to be given a…

  Held by

  The National Archives, Kew

  Date

  1942 Sept 21-30

  Reference

  HW 14/53

• Catalogue level

  Piece

  Commercial messages passed over diplomatic channels

  Commercial messages passed over diplomatic channels

  Held by

  Creating government department or its successor

  Date

  1946 Mar 01-1946 Mar 30

  Reference

  HW 32/53

• Catalogue level

  Piece

  Organisation and use of communications by CBME

  Organisation and use of communications by CBME

  Held by

  The National Archives, Kew

  Date

  1941 May 11 - 1944 Mar 08

  Reference

  HW 51/53

• Catalogue level

  Piece

  Reports of Japanese army air decrypts with subject headers

  Reports of Japanese army air decrypts with subject headers

  Held by

  The National Archives, Kew

  Date

  1944 Sep 01-1944 Nov 28

  Reference

  HW 28/53

• Catalogue level

  Piece

  WTC (Wireless Telegraphy Co-ordination). Records of Williams' Section, responsible...

  WTC (Wireless Telegraphy Co-ordination). Records of Williams' Section, responsible for coordinating interception of diplomatic and commercial communications

  Held by

  The National Archives, Kew

  Date

  1942 Nov 19 - 1944 Jun 03

  Reference

  HW 53/20

• Catalogue level

  Piece

  Italian Mission. GC&CS party responsible for checking post-armistice Italian diplomatic...

  Italian Mission. GC&CS party responsible for checking post-armistice Italian diplomatic communications

  Held by

  The National Archives, Kew

  Date

  1943 Oct 15 - 1944 Aug 26

  Reference

  HW 53/6

• Catalogue level

  Piece

  Mauritius. Correspondence mainly concerning interception and processing of Japanese...

  Mauritius. Correspondence mainly concerning interception and processing of Japanese telegrams

  Held by

  The National Archives, Kew

  Date

  1940 Oct 02 - 1944 Oct 28

  Reference

  HW 53/4

• Catalogue level

  Piece

  Censors. Correspondence concerning acquisition of telegraphic messages through the...

  Censors. Correspondence concerning acquisition of telegraphic messages through the Telegraph Censorship Branch and action concerning the passage of Axis telegrams

  Held by

  The National Archives, Kew

  Date

  1942 Mar 19 - 1943 Dec 13

  Reference

  HW 53/10

• Catalogue level

  Piece

  DSH 14 - Berkeley Street memos. Office notes, procedure notes, serials (Denniston),...

  DSH 14 - Berkeley Street memos. Office notes, procedure notes, serials (Denniston), DD 3 Series (Hastings), notes to heads of sections etc

  Held by

  The National Archives, Kew

  Date

  1943 Sep 28 - 1945 Jul 21

  Reference

  HW 53/5

• Catalogue level

  Piece

  Telegrams to and from Washington. Messages concerning exchange of diplomatic cypher...

  Telegrams to and from Washington. Messages concerning exchange of diplomatic cypher messages

  Held by

  The National Archives, Kew

  Date

  1942 Sep 23 - 1943 Oct 01

  Reference

  HW 53/31