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TIL that Jeremiah G. Hamilton was a Wall Street broker noted as "the only Black millionaire in New York" about a decade before the American Civil War. He amassed a fortune of $2 million ($250,000,000 in 2018 dollars) by the time of his death in 1875. He was known as "The Prince of Darkness"

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rN5N4 TIL The word “ham” (as in HAM Radio) is not an acronym. In the early days of telegraphy & radio comms, professional operators would refer to amateur operators as “hams”, implying their incompetence. The slur was eventually forgotten and the amateur radio community widely adopted the term “HAM Radio”
R50Pl TIL Nearly three-quarters of Pennsylvania residential telephone service in 1943 was party line, with users encouraged to limit calls to five minutes (as neigjbors / other subscribers could listen to your calls).
b6mlN TIL when she was 10 years old, the Vatican dispatched an investigator to determine if Shirley Temple was actually a middle-aged dwarf. After her film career, she was a U.S. diplomat to two countries, and became the first female Chief of Protocol of the United States.
v1dnj TIL Winnipeg has a Skywalk System, a network of pedestrian skyways and tunnels connecting a significant portion of downtown. It provides year-round climate-controlled access to over 200 shops, 700 apartment units, 2 hotels, and 11 financial centres
wLPW6 TIL of the Parthian shot, an ancient military tactic where archers on horses would feign retreat and then turn their bodies while at full gallop to shoot at the pursuing enemy. It required great skill to master. Without a stirrup, the rider relied solely on pressure from his legs to guide his horse.