Focus on
Olga Gray and the Woolwich Arsenal Spy Ring
In 1938, thanks to years of work by a remarkable female agent, MI5 ensured a package of British defence plans stayed secret.
Piece
Report of investigation with US cryptographers on possibility that Germans reading...
Catalogue reference: HW 1/646
What’s it about?
This record is about the Report of investigation with US cryptographers on possibility that Germans reading... dating from 1942 June 14 in the series Government Code and Cypher School: Signals Intelligence Passed to the Prime Minister,.... It is held at The National Archives, Kew.
Is it available online?
No, this record is not available online. However, you can order a copy. Other ways to view it.
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Yes, this record is held at The National Archives and is available to see in person. How to view it.
Full description and record details
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Reference (The unique identifier to the record described, used to order and refer to it)
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HW 1/646
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Date (When the record was created)
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1942 June 14
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Description (What the record is about)
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Report of investigation with US cryptographers on possibility that Germans reading US ciphers. See also 9743, 9744, 9779, 9782, 9871
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Held by (Who holds the record)
- The National Archives, Kew
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Former department reference (Former identifier given by the originating creator)
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c/9761
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Legal status (A note as to whether the record being described is a Public Record or not)
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Public Record(s)
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Closure status (Whether the record is ‘open’ (available to the public) or ‘closed’ (not available due to a legal exemption))
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Open Document, Open Description
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Subjects (Categories and themes found in our collection (our subject list is under development, and some records may have no subjects or fewer than expected))
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- Topics
- Intelligence
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Record URL
- https://beta.nationalarchives.gov.uk/catalogue/id/C4463873/
How to order it
- View this record page in our current catalogue
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- Select an option and follow instructions
Series information
HW 1
Government Code and Cypher School: Signals Intelligence Passed to the Prime Minister,...
See the series level description for more information about this record.
Catalogue hierarchy
Over 27 million records
This record is held at The National Archives, Kew
17,110 records
Within the department: HW
Records created or inherited by Government Communications Headquarters (GCHQ)
3,769 records
Within the series: HW 1
Government Code and Cypher School: Signals Intelligence Passed to the Prime Minister,...
You are currently looking at the piece: HW 1/646
Report of investigation with US cryptographers on possibility that Germans reading...
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