Files W.F.F. Archive Patent and Equipment Records Notes and Diagrams, Subjects Include Printing Telegraphy, Protecting Crytpoteleprinter Transmissions, Electric Cryptograph, Special Modifications In M-161 for A Smaller Cryptograph, 1935-1943
A New Means and Method for Protecting Cryptoteleprinter Transmissions, 25 February 1947
Diagram and Notes of an Unspecified Crypto Device
Diagram of an Unspecified Crypto Device, 1 October 1937
Diagram of OCSIGO, 15 March 1940
Diagram of Wheel Control Unit, Crypto Machine M-161
Invention of an Electronic Cryptograph
Invention of an Electronic Translator or Combiner for Printing Telegraphy and Other Purposes
Invention of Mechanical Wheel Control for A Small Cryptograph, 6 September 1935
Military Characteristics of A Cryptographic Machine for Use In Message Centers of the Larger Fixed and Semi-Fixed Headquarters
Preliminary Proposals for Converter Type M-161
Printing Mechanisms for M-161
Signal Corps Patent Board Meeting No. 2; Converters M-134-T1 and M-134-T2 Improvements Discussed
Special Modifications In M-161 for A Smaller Cryptograph, 20 April 1941
Teletype Enciphering Schematic, 19 July 1943
Wiring Diagram for an Unspecified Crypto Device