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As a boy, Thomas Edison worked with the Grand Trunk Railroad. He set up his very own chemistry lab on board the train.
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Edison works as a telegraph operator in various cities of the Midwest, becoming a first-class press-wire operator and experimenting with telegraph instruments.
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Edison became a telegraph operator after he saved three-year-old Jimmie MacKenzie from being struck by a runaway train.
https://worldhistoryproject.org/1866/thomas-edison-works-at-western-union -
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Edison retires as a telegraph operator to devote his time to invention. He patents several telegraph devices and moves to New York City, where he works for the Laws Gold Indicator Company.
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Edison marries Mary Stillwell, one of his employees, before heading back to the lab to continue work on important improvements in stock ticker technology, several of which he has devised this year.
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Edison invents the quadruplex telegraph for Western Union, which transmits four messages simultaneously (two in each direction).
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In 1866, at the age of 19, Thomas Edison moved to Louisville, Kentucky, where, as an employee of Western Union, he worked the Associated Press bureau news wire.
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provements to the telegraph and the telephone, Edison figured out a way to record sound on tinfoil-coated
