On April 20, 1792,

In 1812 Vice President George Clinton died in Washington at age 73, becoming the first U.S. vice president to die while in office.

the Territory of Wisconsin was established by Congress. Adolf Hitler was born in Braunau, Austria.

comedian Harold Lloyd was born in Burchard, Neb. Also in 1893 artist Joan Miro was born in Barcelona, Spain.

scientists Marie and Pierre Curie isolated the radioactive element radium.

jazz vibraphonist Lionel Hampton was born in Louisville, Ky.

John Paul Stevens, who would become a Supreme Court justice, was born in Chicago. bandleader Tito In 1940 RCA publicly demonstrated its new and powerful electron microscope.

during World War II, allied forces took control of the German cities of Nuremberg and Stuttgart.

United Auto Workers president Walter Reuther was shot and wounded at his home in Detroit.

scientists at the Mayo Clinic announced they'd succeeded in synthesizing a hormone found to be useful in treating rheumatoid arthritis; the substance was named “cortisone.” singer Luther Vandross was born in New York.

Richard J. Daley was sworn in for his first term as Chicago's mayor. (He would be re-elected five times.)

Pierre Elliott Trudeau was sworn in as prime minister of Canada.

the Supreme Court upheld the use of busing to achieve racial desegregation in schools.

the manned lunar module from Apollo 16 landed on the moon.

a Korean Air Lines Boeing 707 crash-landed in northwestern Russia after being fired on by an interceptor after entering Soviet airspace. Two passengers were killed.

the first Cubans sailing to the United States as part of the massive Mariel boatlift reached Florida.

former junk bond financier Michael Milken agreed to plead guilty to six felonies and pay $600 million in penalties to settle one of the largest securities fraud cases in history.

the Columbine High School massacre took place near Littleton, Colo., as two students shot and killed 12 classmates and one teacher before taking their own lives.