It is the 171st day of the year, with only 194 days remaining.
451 - At the Battle of Chalons, Flavius Aetius battles Attila the Hun. After the battle, Attila retreats, causing the Romans to interpret it as victory.
1605 - After only 3-months as tsar, 16-year-old Feodor II of Russia is assassinated.
1840 - Samuel Morse receives the patent for the telegraph.
1863 - West Virginia is admitted as the 35th U.S. state.
1877 - Alexander Graham Bell installs the world's first commercial telephone service in Hamilton, Ontario, Canada.
1893 - Lizzie Borden is acquitted of the murders of her father and stepmother.
1900 - The Imperial Chinese Army begins a 55-day siege of the Legation Quarter in Beijing, China.
1942 - Kazimierz Piechowski and three others, dressed as members of SS-Totenkopfverbande, steal an SS staff car and escape from the Auschwitz concentration camp.
1944 - The Battle of the Philippine Sea concludes with a decisive U.S. naval victory. The lopsided naval air battle is also known as the Great Marianas Turkey Shoot.
1972 - An 18.5 minute gap appears in the tape recording of the conversation between President Richard Nixon and his advisers regarding the recent arrests of his operatives while breaking into the Watergate complex.