Morse signal receiver. An electrical telegraph was developed and patented in the United States in 1837 by Samuel Morse. His assistant, Alfred Vail, developed the Morse code signaling alphabet with Morse. At the Speedwell Ironworks in Morristown, New Jersey on January 11, 1838, Morse and Vail made the first public demonstration of the electric telegraph.

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Morse Telegraph, Signal Receiver, 19th Century

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