37) Mark Ham, "Edison and the Phonograph," 17.
36) Tate TAE, July 1892, 1892 Lab Business Conditions;
Tate, Open door, pp.
39) TAE Batchelor, May 1889 890408, 325.
38) Edison’s handwritten notes phonograph development found
in 880103 and dated from 1890, 1890 Phonograph. phono United .6
34) Scientific American. LXII <26 April 1890), 263; Annot G
Morrison TAE, July 1895.
.
35) Scientific American, LXII <26 April 1890), 263; Tate to
Lippincott, Mov 1888, 870621, 394. 247-248
