02/28/1878 Cheever, Charles Augustus to Bradley, George Lothrop
(Blake, Clarence J; Blake, Eli Whitney, Jr; Edison, Thomas Alva) Manufacturing; Cylinder phonograph
[X012G1]  AT&T Archives and History Center, Warren, N.J.: Edison Speaking Phonograph Company Records -- Correspondence (Box 1205)
[X012G1AJ; TAEM 0:0]
Courtesy of the AT&T Archives and History Center.