Document Title The 'Noulens Case': Investigation into Communist Activity in Far East and Exposure of Spy Ring; Exhibits D (1)-(8); Non-Telegraphic Cypher Letters and Messages
Reference FO 1093/97
Conflicts Other
Themes Intelligence Operations, Signals Intelligence and Code-breaking
Regions East Asia, Europe
Countries China, Japan, Wales
Document Type Correspondence
Organisations Foreign Office, Permanent Under-Secretary's Department
People Hilaire Noulens
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