… the first passenger railroad in the U.S. began service between Baltimore and Ellicott’s Mills, Maryland, in 1830. That’s 13 miles.
… the first telegraph message was transmitted by Samuel F. B. Morse in 1844. Sent from Washington to Baltimore it said, “What hath God wrought!”
… the first Major League Baseball night game was played in Cincinnati in 1935. The Reds beat the Phillies 2-1. The Reds played seven night games that year (one against each National League opponent).