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Olga Gray and the Woolwich Arsenal Spy Ring
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Catalogue reference: HW 25/11
This record is about the Miscellaneous papers in folder entitled 'German Naval ENIGMA' dating from 1939 Aug 26-1957 Dec 30 in the series Government Code and Cypher School: Cryptographic Studies. It is held at The National Archives, Kew.
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HW 25
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Miscellaneous papers in folder entitled 'German Naval ENIGMA'
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