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THOMAS A. EDISON - AUTOGRAPH NOTE SIGNED - HFSID 40687

THOMAS A. EDISON. ANS: "E" in pencil, 1p, 5x8. No place, c. 1920. In full: "Moore Do you know of any disk that had a number of seperate (sic) things on with or continuous grooves Something like the new 12" with 10 tunes on." Edison, who writes to laboratory supervisor, S.A.

Sale Price $1,360.00

Reg. $1,600.00

Condition: See item description
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THOMAS A. EDISON. ANS: "E" in pencil, 1p, 5x8. No place, c. 1920. In full: "Moore Do you know of any disk that had a number of seperate (sic) things on with or continuous grooves Something like the new 12" with 10 tunes on." Edison, who writes to laboratory supervisor, S.A. Moore,is discussing refinements in the design of his disc phonograph. Originally, in 1877 Edison's phonograph had a receiver, a delicate metal needle that operated on a phonograph blank of white wax. The surface of the wax blank (which looked like an ivory box) could record from 1,000 to 1,200 words or several musical compositions. The wax blank then could be automatically pared from 15-20 times for new records. Between 1912 and 1926, Edison continually refined his discs starting with the Edison Disc Records in 1912 and launching his marketing sensation, The Re-Creation Disk, in 1919. The up and down groove enabled the record to play 50% longer than the "talking machine" record of the same size. A 10-inch Edison Disc record played longer than a 12-inch lateral groove. His Re-Creation Disk was molded in greater thickness and from a harder substance than an ordinary record, making it more durable.Working notes by Thomas Edison relating to his favorite invention, the phonograph, are scarce. This one, mentioning grooves and the 12" disc is particularly desirable. Fragile. 2½-inch separation at mid-horizontal fold. Nicked edges.

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