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Hayes, Richard J., 1902-1976
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Hayes, Richard J., 1902-1976
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Hayes, Richard J., 1902-1976
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Photostat copies of codes and ciphers.
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Intercepted radio ciphers,
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Appendix C: Description of a code,
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Introductory,
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Intercepted radio ciphers, April and November 1943.
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Intercepted radio ciphers, July, October and November 1942, with attached note "Cdt. Butler to s...
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Folder and envelope marked "Swedish cipher machines, 1948" containing code breaker's notes and r...
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Description by Richard J. Hayes of cipher message burnt by Hermann Goertz in the grate of his ce...
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Intercepted radio ciphers, 5/2/1941 - 7/2/41.
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Richard J. Hayes Papers,
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Photostat copies of codes and ciphers.
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Note on the cipher used by the Irish Army,
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Intercepted radio ciphers, 12/2/1941 - 16/2/41.
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Browne and Nolan science exercise book containing ciphers.
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Intercepted radio ciphers, 15/2/1941-16/2/41.
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Copies of articles from various publications relating to codebreakding and photograph of cipher.
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Intercepted radio ciphers,
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Sheets of ciphers and attempts at code-breaking,
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Photostat copies of codes and ciphers.
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Photostat copies of ciphers.
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Collections: Richard J. Hayes Papers, 1902-1976.
Format
46
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46
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Subject
43
Foreign relations
42
World War, 1939-1945
41
Secret service
40
Cryptography
39
Cryptographers
1
History
Author
38
Hayes, Richard J., 1902-1976
1
Blume, Herbert
1
Burdick, Charles Burton, 1927-1998
1
Germany. Botschaft (Ireland)
1
Healy, Joseph G., Captain
1
Hoch, Anton, 1914-1981
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Jespersen, Otto, 1860-1943
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Collections
Richard J. Hayes Papers, 1902-1976.
Language
44
English
2
German
Genre
1
Correspondence
Era
40
1939-1945
4
1890-1947
1
1902-
1
1922-
Region
44
Ireland
42
Germany
2
United States
1
Italy
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