MIKE MITCHELL VIA ASSOCIATED PRESS Prints of these Feb. 11, 1964, photographs from a collection of photos of the Beatles taken by Mike Mitchell at the Washington Coliseum in the District were to be auctioned by Christie's auction house. Above: A backlit shot taken during a pre-concert news conference. Above right: An animated Ringo Starr sings lead vocals on “I Wanna Be Your Man” during the Fab Four's first U.S. concert. Left: Paul McCartney (left) and John Lennon perform, two days after their U.S. television debut.