The telegraph in American and Morse memorial (1886)
Reid, James D · New York, Printed for the author by J. Polhemus · leaf 926
-»Hh- The American Speaking Telephone Company. 847 I … the ability to transmit independent tones, simultaneously, no doubt is,the Telephone seems to have in it the potency and promise of avastly more extended and useful service. The Telephone, although variously constructed, is easily described.The parts are few and simple. The cut represents its…
Morse, Samuel Finley Breese, 1791-1872 · Telegraph
Internet Archive · Northeastern University Library · Public Domain Mark 1.0. Free to use for anything.
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