GRAY'S TELEPHONE SYSTEM
A demonstration of the telephone system of Elisha Gray in New York. Gray filed a patent for the telephone on the same day as Bell, but his initial delay proved costly
Picture No
10129814
Media ID
47317654
Size
4800px x 3282px
(3.4MB)
Credit
Mary Evans Picture Library
Source
Engraved bys T after Gilbert from La Nature' 1878
Date
1878
