Catalogue description Account of the methods used for breaking German teleprinter cypher messages
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Reference: | HW 25/5 |
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Description: |
Account of the methods used for breaking German teleprinter cypher messages |
Date: | 1941 Jun 01-1945 Jun 30 |
Held by: | The National Archives, Kew |
Former reference in its original department: | GENERAL REPORT ON TUNNY VOLUME II |
Legal status: | Public Record(s) |
Closure status: | Open Document, Open Description |
Access conditions: | Closed Until 2000 |
Record opening date: | 28 September 2000 |
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