1861: The American Civil War began as Confederate forces opened fire on Fort Sumter in South Carolina. (The Union troops holding the fort surrendered the following day.)
1877: The catcher's mask was first used in a baseball game, by James Tyng of Harvard in a game against the Lynn Live Oaks.1955: The Salk vaccine against polio was declared safe and effective.
1967: South Dakota's first mourning dove hunting season would open Sept. 1, according to the Game, Fish and Parks Department.1981: The space shuttle Columbia blasted off from Cape Canaveral on its first test flight.
1987: The Onaka grocery store closed after a 73-year run.
Source: Dacotah Prairie Museum and The Associated Press