G. S. Vernam

Printing telegraph operation of way wires

G. S. Vernam, 1938, Electrical Engineering.

An automatic concentration unit for printing telegraph circuits

G. S. Vernam, 1932, Electrical Engineering.

Cipher printing telegraph systems: For secret wire and radio telegraphic communications

G. S. Vernam, 2022, Journal of the A.I.E.E..

Cipher Printing Telegraph Systems For Secret Wire and Radio Telegraphic Communications

G. S. Vernam, G. S. Vernam, 1926, Transactions of the American Institute of Electrical Engineers.