07/11/1878 Edison, Thomas Alva to English Mechanic
(Engineering; New York Tribune; Hughes, David Edward; Prescott, George Bartlett; Preece, William Henry) Patent assignments, licenses, and royalties; Carbon, coal, glass, ceramics; Telephone [Document Within a Document]
[MBSB1]  Special Collections Series -- Charles Batchelor Collection -- Scrapbooks: Cat. 1240 (1876-1878)
[MBSB10814; TAEM 94:314]
Courtesy of Thomas Edison National Historical Park.