https://dh.scu.edu/exhibits/files/original/203/5814/page4.png 6b174dec9b7908c3898ad8416828b7b7 Dublin Core The Dublin Core metadata element set is common to all Omeka records, including items, files, and collections. For more information see, http://dublincore.org/documents/dces/. Title A name given to the resource HIST 27/127 WWII European Theater Spring 2026 Dublin Core The Dublin Core metadata element set is common to all Omeka records, including items, files, and collections. For more information see, http://dublincore.org/documents/dces/. Title A name given to the resource Turing's Treatise on the Enigma - A Photographic Copy of a Paper Prepared in GCCS, written ca. 1939-1942 Creator An entity primarily responsible for making the resource National Archives and Records Administration Subject The topic of the resource Records of the National Security Agency/Central Security Service, 1917 - 1998 Description An account of the resource 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 The nature or genre of the resource Image Format The file format, physical medium, or dimensions of the resource png Source A related resource from which the described resource is derived https://www.archives.gov/files/press/press-releases/2015/images/turing-enigma-treatise.pdf Language A language of the resource English