08/13/1876 Johnson, Edward Hibberd to Thomson, William, (Lord Kelvin)
(American Automatic Telegraph Co; Edison, Thomas Alva) Automatic telegraphy; Electromotograph
[W400E]  National Archives, Northeast Region, New York, NY: Records of the District Courts of the United States (Record Group 21) -- U.S. Circuit Court (Southern N.Y.) -- George Harrington et al. v. Atlantic & Pacific Telegraph Company et al. -- Testimony before the Master
[W400E148; TAEM 0:0]
Courtesy of the National Archives.