Late 1830s Samuel Morse developed Morse Code for the telegraph. Besides this important invention, he was an accomplished artist. Morse’s mansion still exists as a museum in Poughkeepsie NY.
Late 1800s, telegraph lines crisscrossed the USA and became the backbone of long-distance communications. In this print, the Pony Express is depicted which was the fastest form of communication prior to the telegraph.
Early 1900s with the invention of the telephone, telegraph lines became of less importance. Morse Code used in radio continued to be active. Here is an actual photo of the Titanic radio room. After the Titanic was lost, all ships were required to have Morse Code radios.
Morse Code was vital for ship to shore & military use until replaced by Satellite communications in the 1990s. This is a wonderful photo taken in a WW2 New Guinea quonset hut in 1943. In the lower right you can see a copy of Cosmopolitan Magazine.
Morse Code is still widely used today in Amateur Radio Communications. Morse Code (CW) is having a renaissance as many young people are enthusiastic about portable outdoor operations and CW radios are overall easier to handle.