[Science, Medicine & Mathematics] [Edison, Thomas A.] Three Documents Relating to the Phonoplex System Typed Document, signed New York: January 17, 1898. 4 pp., on legal size paper. Agreement between Edison and The Western Union Telegraph Company for his Phonoplex system. Signed by Edison as well as Western Union Vice-President Thomas F. Clark and Secretary A.R. Brewer. Docketed on verso. With: Gilmore, W(illiam). E. Typed Letter, signed Orange, New Jersey: July 12, 1900. 1 pp. 4to, on Edison Manufacturing Co. stationary. From Gilmore as General Manager of Edison's phonograph and motion picture division, to Charles Tinker, General Superintendent of the Western Union Telegraph Co. Endorsements on verso, signed twice by Tinker, twice by Eastern General Manager of Western Union Thomas T. Eckert, and Electrical Engineer A.S. Brown. Regarding royalities pertaining to the above agreement. With: Eckert, Thomas T. Typed Letter, signed New York: July 18, 1900. 1 pp. 4to, on Western Union Telegraph Company Executive Office stationary. From Eckert as President of the company to General Manager W(illiam).E. Gilmore. Accepting royalty changes suggested in the above letter. Fascinating and important collection relating to the Edison Phonoplex System of Telegraphy, the basis for our present day system of communication. Edison developed the Phonoplex system between 1885 and 1886.
[Science, Medicine & Mathematics] [Edison, Thomas A.] Three Documents Relating to the Phonoplex System Typed Document, signed New York: January 17, 1898. 4 pp., on legal size paper. Agreement between Edison and The Western Union Telegraph Company for his Phonoplex system. Signed by Edison as well as Western Union Vice-President Thomas F. Clark and Secretary A.R. Brewer. Docketed on verso. With: Gilmore, W(illiam). E. Typed Letter, signed Orange, New Jersey: July 12, 1900. 1 pp. 4to, on Edison Manufacturing Co. stationary. From Gilmore as General Manager of Edison's phonograph and motion picture division, to Charles Tinker, General Superintendent of the Western Union Telegraph Co. Endorsements on verso, signed twice by Tinker, twice by Eastern General Manager of Western Union Thomas T. Eckert, and Electrical Engineer A.S. Brown. Regarding royalities pertaining to the above agreement. With: Eckert, Thomas T. Typed Letter, signed New York: July 18, 1900. 1 pp. 4to, on Western Union Telegraph Company Executive Office stationary. From Eckert as President of the company to General Manager W(illiam).E. Gilmore. Accepting royalty changes suggested in the above letter. Fascinating and important collection relating to the Edison Phonoplex System of Telegraphy, the basis for our present day system of communication. Edison developed the Phonoplex system between 1885 and 1886.
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