Television host Ed Sullivan smiles while standing with British rock group the Beatles on the set of his variety series in New York on Feb. 9, 1964. Left to right: Ringo Starr, George Harrison, Sullivan, John Lennon and Paul McCartney.
Fifty years ago, Beatlemania swept the U.S. as the British pop icons appeared on 'The Ed Sullivan Show' and began their first American tour.
Are you a superfan? Test your knowledge of the Fab Four with these 10 questions. Don't forget to tell us how you did in the comments below.