The telegraph in American and Morse memorial (1886)
Reid, James D · New York, Printed for the author by J. Polhemus · leaf 402
e he contrived an automaticcircuit closer, which opened with the pressure of the hand while trans-mitting, and closed on its removal. He received an order also fromBoston, for two machines to strike fire alarms, and which were madefrom the models previously prepared by Mr. Farmer for Mr. Smith… … Moses G. Farmer. 3/2 American Telegraphic History. being united in a local circuit. In experimenting with this apparatus,the bell circuit was connected with that of the wire to New York, andthe bell was rung by the New York operator. Of course a fertile-minded man like this could not long be kept…
Morse, Samuel Finley Breese, 1791-1872 · Telegraph
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