Communications Machine Explained

The Communications Machine, or "CM", is a mechanical device used by the United States Navy for most of the 1920s. It used a sliding alphabet system. It was developed by Agnes Meyer Driscoll and William Gresham. In 1937 the United States Congress recognized the achievement of these two by awarding them both $15,000.[1]

Notes and References

  1. Web site: Madame X: Agnes Meyer Driscoll and U.S. Naval Cryptology, 1919 - 1940 . NSA . 15 June 2014 . dead . https://web.archive.org/web/20130918015635/http://www.nsa.gov/public_info/_files/crypto_almanac_50th/Madame_X_Agnes_Meyer_Driscoll.pdf . 18 September 2013 .

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