37) Mark Ham, "Edison and the Phonograph," 17.
38) Edison’s handwritten notes phonograph development found
in 880103 and dated from 1890, 1890 Phonograph.
39) TAE Batchelor, May 1889 890408, 325.6
34) Scientific American.
36) Tate TAE, July 1892, 1892 Lab Business Conditions;
Tate, Open door, pp. 247-248.
35) Scientific American, LXII <26 April 1890), 263; Tate to
Lippincott, Mov 1888, 870621, 394.
. LXII <26 April 1890), 263; Annot G
Morrison TAE, July 1895. phono United
