461 - St. Patrick died today.
1879 - Albert Einstein was born today.
1999 - NATO welcomes as members the former Warsaw Pact communist countries Poland, Hungary and the Czech Republic.
1874 - Radical Republican Charles Sumner died.
1681 - The Pennsylvania Charter was granted to William Penn.
1981 - Ketchup is made a vegetable, so public schools can include it in a balanced meal.
1841 - The birthday of the utilitarian Supreme Court Justice Oliver Wendell Holmes, Jr.