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
Operating instructions for the Glow Lamp Ciphering Machine 'ENIGMA'. This document...
Catalogue reference: HW 25/7
What’s it about?
This record is about the Operating instructions for the Glow Lamp Ciphering Machine 'ENIGMA'. This document... dating from 1923 Jan 01-1927 Dec 31 in the series Government Code and Cypher School: Cryptographic Studies. 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)
- HW 25/7
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Date (When the record was created)
- 1923 Jan 01-1927 Dec 31
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Description (What the record is about)
- Operating instructions for the Glow Lamp Ciphering Machine 'ENIGMA'. This document is undated but is thought to have been produced in the mid-1920s
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Held by (Who holds the record)
- The National Archives, Kew
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Legal status (A note as to whether the record being described is a Public Record or not)
- 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))
- 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/C10924819/
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 25
Government Code and Cypher School: Cryptographic Studies
See the series level description for more information about this record.
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Over 27 million records
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Operating instructions for the Glow Lamp Ciphering Machine 'ENIGMA'. This document...
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