Spot News, film, Chevrolet Motors Division of the General Motors Sales Corporation, 1937; this film is a 9:15 minute dramatic explanation of how newspapers transmitted photographs over telephone lines. The man sending the Fax places the telephone earpiece on the coupler at 3:14 before the explanation. The diagram shown at 6:30 clearly shows the earpiece on the coupler in the data path from fax scanner to receiver.
Lang, Harry G. (2000). A Phone of Our Own: the Deaf Insurrection Against Ma Bell. Washington, D.C.: Gallaudet University Press. ISBN978-1-56368-090-8; OCLC59576008
