Gilbert Sandford Vernam Collection
Gilbert Sandford Vernam (1890-1960) worked for the research department of American Telephone and Telegraph and other communication companies, but he was best known for his contributions to the science of cryptology. The collection contains some random notes (1919), and an incomplete copy of an abstract of a speech by H.H. Timbers on “Printing Telegraphy” (1919) and blueprints of Multiple Test Set for No. 11 Lamp Multiple Test Circuit (1912). Also included is a copy of the Manual for the Solution of Military Ciphers by Parker Hitt (1918). The major part of the collections consists of three diaries kept by Vernam during 1918, 1919, and 1922-26. The 1918 volume deals primarily with the Morkrum Deciphering, Enciphering Set.