All of the events below occurred on the same day of the month, July 21.
1861: The first major battle of the Civil War takes place at Manassas Junction, Virginia. Known as the First Battle of Bull Run, it ends with a Confederate victory.
1899: Novelist, short story writer and journalist Ernest Hemingway is born in Oak Park, Illinois.
1924: Actor Don Knotts is born in Morgantown, West Virginia.
1951: Comedian and actor Robin Williams is born in Chicago.
1971: Carole King's album Tapestry is certified gold, indicating sales of at least one-million units.
1973: Atlanta's Hank Aaron becomes only the second player to hit 700 career home runs. It comes off pitcher Ken Brett of the Phillies in an 8-4 loss.
1983: Singer Diana Ross hosts a concert in New York's Central Park, which is shortened by a driving rainstorm. She returns the next day and performs in beautiful weather.
2011: The 135th and final flight of NASA's Space Shuttle Program ends with Atlantis touching down at the Kennedy Space Center in Florida.