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Olga Gray and the Woolwich Arsenal Spy Ring
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Catalogue reference: HW 50/66
This record is about the Dossier on SIXTA. Historical notes on the development of WTI (analysis of enemy communications... dating from 1939 Sep 01 - 1945 Apr 30 in the series Government Code and Cypher School and Government Communications Headquarters: Records.... It is held at The National Archives, Kew.
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Dossier on SIXTA. Historical notes on the development of WTI (analysis of enemy communications structure and activity) culminating in the establishment of the SIXTA Section at Bletchley Park, which concentrated primarily on German Army and Air Force communications
HW 50
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Records created or inherited by Government Communications Headquarters (GCHQ)
Government Code and Cypher School and Government Communications Headquarters: Records...
Dossier on SIXTA. Historical notes on the development of WTI (analysis of enemy communications...
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