Turing's Treatise on the Enigma - A Photographic Copy of a Paper Prepared in GCCS, written ca. 1939-1942
Title
Turing's Treatise on the Enigma - A Photographic Copy of a Paper Prepared in GCCS, written ca. 1939-1942
Creator
National Archives and Records Administration
Subject
Records of the National Security Agency/Central Security Service, 1917 - 1998
Description
A declassified internal manual written by Alan Turing and other codebreakers at Bletchley Park during the war. It gives a detailed breakdown of how the Enigma machine's electrical circuits, rotatable wheels, and plugboards actually worked to scramble letters.
Type
Image
Format
png
Source
https://www.archives.gov/files/press/press-releases/2015/images/turing-enigma-treatise.pdf
Language
English
Files
Citation
National Archives and Records Administration, “Turing's Treatise on the Enigma - A Photographic Copy of a Paper Prepared in GCCS, written ca. 1939-1942,” Santa Clara University Digital Exhibits, accessed May 6, 2026, https://dh.scu.edu/exhibits/items/show/5814.
Item Relations
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