1969 - The first temporary artificial heart is implanted, by Dr. Denton Cooley.
1949 - North Atlantic Treaty Organization (NATO) is created, with 12 countries.
1850 - Municipality of Los Angeles incorporated, five months before California joins the Union
1818 - Congress adopts the flag of the United States, with 13 red and white stripes and one star for each state
1655 - Miraculous statue "Infant Jesus of Prague" coronated by command of Cardinal Harrach
This Day In Business
1975 - Microsoft Corporation is started in Albuquerque, New Mexico by Bill Gates and Paul Allen.
1975 - Musician Steve Miller is arrested for setting fire to his girlfriend Benita Diorio's clothing.
1581 - Francis Drake knighted after completing a circumnavigation of the world.
1988 - Behind Danny Manning, Kansas pulls off an incredible feat and wins the NCAA championship.
April 4th Holiday
Peace Day (Angola) - Celebrates and promotes peace and nonviolence.
Today's Birthday Trivia
She played Vanessa in Sons of Tucson alongside Tyler Labine. Who is she?
Today's Birthday Horoscope
Learn about people born on this day by reading the April 4 Birthday Horoscope.
Famous Birthdays on Twitter
Follow @FamousBirthdays on Twitter for daily birthdays, trivia, and fun.