04/23/1891 Pennsylvania Railroad and Taylor, William F, (Pennsylvania) to Tate, Alfred Ord
Financial operations (companies and organizations); Phonoplex and railroad telegraphy; Electric battery
[D9156]  Document File Series -- 1891: (D-91-56) Telegraph -- Phonoplex
[D9156AAD; TAEM 132:260]
Courtesy of Thomas Edison National Historical Park.