History for April 4

History for April 4 - On-This-Day.com:
Dorothea Dix 1802, Linus Yale 1821 - Inventor (Yale Infallible Bank Lock and cylinder lock), Isoroku Yamamoto 1884 


Muddy Waters (McKinley Morganfield) 1913 - Blues singer, guitarist ("Closet to You", "Honey Bee"), Anthony Perkins 1932 - Actor (Movies: "Psycho" series), Robert Downey, Jr. 1965 - Actor (Movie: "U.S. Marshals") 


1917 - The U.S. Senate voted 90-6 to enter World War I on the Allied side.


1932 - After five years of research, professor C.G. King, of the University of Pittsburgh, isolated vitamin C.


1945 - During World War II, U.S. forces liberated the Nazi death camp Ohrdruf in Germany.


1968 - Martin Luther King Jr. was assassinated at the age of 39.


1973 - In New York, the original World Trade Center twin towers opened. At the time they were the tallest building in the world.


1974 - Hank Aaron tied Babe Ruth's major league baseball home-run record with 714.


1975 - More than 130 people, most of them children, were killed when a U.S. Air Force transport plane evacuating Vietnamese orphans crashed just after takeoff from Saigon.


1991 - Pennsylvanian Senator John Heinz and six others were killed when a helicopter collided with Heinz's plane over a schoolyard in Merion, PA.