Today in History: Jan 6, 1838, Samuel Morse demonstrates the telegraph
Samuel Morse’s telegraph system was demonstrated for the first time at the Speedwell Iron Works in Morristown, New Jersey. The telegraph, a device which used electric impulses to transmit encoded messages over a wire, would eventually revolutionize long-distance communication, reaching the height of its popularity in the 1920s and 1930s.
The first public transmission, with the message “A patient waiter is no loser”, was witnessed by a mostly local crowd.
Sources: 1, 2