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Thomas Edison

Currency:USD Category:Collectibles / Autographs Start Price:NA Estimated At:2,000.00 - 2,500.00 USD
Thomas Edison

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Auction Date:2018 Feb 07 @ 18:00 (UTC-5 : EST/CDT)
Location:236 Commercial St., Suite 100, Boston, Massachusetts, 02109, United States
ALS - Autograph Letter Signed
ANS - Autograph Note Signed
AQS - Autograph Quotation Signed
AMQS - Autograph Musical Quotation Signed
DS - Document Signed
FDC - First Day Cover
Inscribed - “Personalized”
ISP - Inscribed Signed Photograph
LS - Letter Signed
SP - Signed Photograph
TLS - Typed Letter Signed
ALS signed “Edison,” one page, 8 x 10.5, New Jersey and Pennsylvania Concentrating Works letterhead, no date. Letter to "F.L.P.," probably Frank L. Perry, who was a journalist for the trade periodical Western Electrician. In full: "See 'Loud Speaking Telephone' in Prescott's work on Elec. & other works on telephony. The apparatus is not only useful for telephones but for other things it has no 'self induction' and would record attenuating waves absolutely true up to 100,000 per second." In very good condition, with creasing, soiling, and light show-through from old tape repairs on the reverse. Edison refers to the works of George B. Prescott, an American electrical engineer who wrote several books on the history of electricity, including an 1877 work entitled 'Electricity and the Electric Telegraph' and an 1878 work entitled 'The Speaking Telephone, Talking Phonograph and Other Novelties.' In 1879, Edison invented a new telephone receiver with a carbon-button transmitter and an electromotograph receiver that would be dubbed 'The Edison Loud Speaking Telephone.' A fabulous, early letter concerning a tremendous technical innovation.