05/02/1881 Edison, Thomas Alva to Acheson, Edward Goodrich
(Haid, Alfred; Insull, Samuel) Research and development; Metals and minerals; Carbon, coal, glass, ceramics
[X001J1]  Henry Ford Museum and Greenfield Village Research Center, Dearborn, Mich.: Edison Papers and Related Items -- Series V: Edison Pioneers -- Acheson, Edward Goodrich (1856-1931)
[X001J1AD; TAEM 0:0]
Courtesy of the Henry Ford Museum and Greenfield Village Research Center.