The first battle in the 30-year War of Roses took place at St. Albans.
The first life insurance policy in the United States was issued in Philadelphia.
Abraham Lincoln received patent number 6469 for his floating dry dock.
Ceylon became Sri Lanka.
Richard Nixon arrived in Moscow, becoming the first U.S. president to visit the Soviet Union.
North Yemen and South Yemen merged to form the Republic of Yemen.
Johnny Carson hosted the last episode of his Tonight Show.
At least 140 people are killed and hundreds more injured as a three-quarter-mile-wide tornado hits Joplin, Missouri. The tornado is among the deadliest in the nation's history, destroying nearly a third of the city and damaging about 2,000 buildings, including water treatment and sewage plants.
Tokyo Skytree, which at 634 meters high is the tallest tower in the world, opened to the public.