Catalogue description Leakage of top secret Foreign Office telegrams in the USA: evidence and investigation....

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Details of KV 6/145
Reference: KV 6/145
Description:

Leakage of top secret Foreign Office telegrams in the USA: evidence and investigation. This is the Security Service's file for the investigation of a leakage in Washington which led to the unmasking of Donald MACLEAN as a Soviet agent and his flight to Moscow with Guy BURGESS

Note: Serial 607a: timeline summary of the investigation
Date: 1951 Oct 02 - 1956 Feb 06
Held by: The National Archives, Kew
Former reference in its original department: L 305-0121-42 VOL 6
Legal status: Public Record(s)
Closure status: Open Document, Open Description
Access conditions: Open on Transfer
Record opening date: 23 October 2015

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