September 3rd is the 246th day of the year (247th in leap years) in the Gregorian calendar. There are 119 days remaining in the year.1666 • The Royal Exchange burns down in the Great Fire of London
1783 • Revolutionary War: The war ends with the signing of the Treaty of Paris by the U.S. and Great Britain.
1838 • Dressed in a sailors uniform and carrying identification papers provided by a Free Black seaman, future abolitionist Frederick Douglass boards a train in Maryland on his way to freedom from slavery.
1935 • Sir Malcolm Campbell reaches speed of 304.331 miles per hour on the Bonneville Salt Flats in Utah, becoming the first person to drive an automobile over 300 mph
1954 • The German U-Boat U-505 begins its move from a specially constructed dock to its final site at Chicagos Museum of Science and Industry.
1954 • The Lone Ranger was heard on radio for the final time after 2,956 episodes over a period of twenty-one years.
1966 • The television series The Adventures of Ozzie and Harriet ended after fourteen years.
1967 • The TV game show Whats My Line? broadcast its final episode. The show aired over seventeen years on CBS.
1976 • Viking program: The Viking 2 spacecraft lands at Utopia Planitia on Mars.
2004 • Beslan school hostage crisis: Day 3: The Beslan hostage crisis ends with the deaths of over 300 people, more than half of which are children.