On October 10, 1767, Charles Mason and Jeremiah Dixon complete their survey of the boundary between the colonies of Pennsylvania and Maryland as well as areas that would eventually become the states of Delaware and West Virginia. The Penn and Calvert families had hired Mason and Dixon, English surveyors, to settle their dispute over the boundary between their two proprietary colonies, Pennsylvania and Maryland.

On October 10, 1877, the U.S. Army holds a West Point funeral with full military honors for Lieutenant-Colonel George Armstrong Custer. Killed the previous year in Montana by Sioux and Cheyenne Indians at the Battle of the Little Big Horn, Custer’s body had been returned to the East for burial on the grounds of the U.S. Military Academy at West Point, New York, where Custer had graduated in 1861—at the bottom of his class.

During the Battle of Britain, the German Luftwaffe launches a heavy nighttime air raid on London. The dome of St. Paul’s Cathedral is pierced by a Nazi bomb, leaving the high altar in ruin. It was one of the few occasions that the 17th-century cathedral suffered significant damage during Germany’s nearly ceaseless bombing raids on London in the fall of 1940.

On October 10, 1954, the Viet Minh formally take over Hanoi and control of North Vietnam.

Less than a year before Richard M. Nixon’s resignation as president of the United States, his Vice President, Spiro Agnew, resigns in disgrace. The same day, he pleaded no contest to a charge of federal income tax evasion in exchange for the dropping of charges of political corruption. He was subsequently fined $10,000, sentenced to three years probation and disbarred by the Maryland court of appeals.

Former U.S. postal worker Joseph Harris shoots two former co-workers to death at the post office in Ridgewood, New Jersey. The night before, Harris had killed his former supervisor, Carol Ott, with a three-foot samurai sword, and shot her fiance, Cornelius Kasten, in their home. After a four-hour standoff with police at the post office, Harris was arrested.

On October 10, 2004, the actor Christopher Reeve, who became famous for his starring role in four Superman films, dies from heart failure at the age of 52 at a hospital near his home in Westchester County, New York. Reeve, who was paralyzed in a 1995 horse-riding accident, was a leading advocate for spinal cord research.