Control Traffic is being prepared
8/1945
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Original caption states: "Control: Control traffic is being prepared according to group-count frequency distribution. For this purpose random English word text prepared by IBM equipment is used. The teletype page copy and teletype tape are then attached to job tickets which show the approximate group count, addresses(s), precedence, classification, and cryptographic system associated with each control message. "
This primary source comes from the Records of the National Security Agency/Central Security Service.
Full Citation: Control Traffic is being prepared; 8/1945; NR 2980 CBNM11A 11563A 19450800 Pictorial History of the Signal Security Agency; Historic Cryptographic Records, 1952–1981; Records of the National Security Agency/Central Security Service, Record Group 457; National Archives at College Park, College Park, MD. [Online Version, https://www.docsteach.org/documents/document/control-traffic-being-prepared, April 27, 2024]Rights: Public Domain, Free of Known Copyright Restrictions. Learn more on our privacy and legal page.