1862 Rebels and Yankees clash at the Battle of Antietam 1787 U.S. Constitution signed 1976 Space Shuttle unveiled 1978 Camp David Accords signed 1868 Cheyenne and Sioux decimate frontiersmen at Beecher’s Island 1796 Washington prepares final draft of farewell address 1939 Soviet Union invades Poland More at the link: http://www.history.com/this-day-in-history
