This folder contains correspondence and other documents relating to telegraphy. Among the documents for 1875 is an agreement, signed by Edison, Edwin J. Coles, and W. D. Clark, relating to the financing and commercialization of a new printing telegraph invented by Edison.

All of the documents have been selected except for a series of electrotypes of telegraph instruments, which can also be found in Scrapbook, Cat. 1178, Miscellaneous Scrapbook Series.