Catalogue description Decrypts relating to enemy exploitation of US State Department cyphers, with related...

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Details of HW 40/132
Reference: HW 40/132
Description:

Decrypts relating to enemy exploitation of US State Department cyphers, with related correspondence

Date: 1942 Aug 18 - 1945 Oct 24
Held by: The National Archives, Kew
Former reference in its original department: L10(A) PART I
Legal status: Public Record(s)
Closure status: Open Document, Open Description
Access conditions: Retained Until 2004
Record opening date: 28 September 2004

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