Roman emperor, Gaius Caesar, better known as Caligula (meaning Little Boot—he used to wear military boots as a child), was murdered.
Robert Baden-Powell organized the first Boy Scout troop in England.
Winston Churchill died in London at age 90.
Voyager Two space probe passes within 51,000 miles of Uranus.
The first African-American to sit on the Supreme Court, Thurgood Marshall, died.
The Department of Homeland Security, under Tom Ridge, became a cabinet department.