Elvis Presley and Joan O'Brien in It Happened at the World's Fair (1963)

Elvis Presley in It Happened at the World's Fair (1963)

Elvis Presley, Gary Lockwood, Joan O'Brien, Vicky Tiu, and H.M. Wynant in It Happened at the World's Fair (1963)

Elvis Presley on the set of "It Happened at the World's Fair," MGM, 1962.

Elvis Presley, Kurt Russell, and Joan O'Brien in It Happened at the World's Fair (1963)

Elvis Presley and Kurt Russell in It Happened at the World's Fair (1963)

Elvis Presley and H.M. Wynant in It Happened at the World's Fair (1963)

Elvis Presley, Gary Lockwood, and Guy Raymond in It Happened at the World's Fair (1963)

Elvis Presley, Gary Lockwood, Vicky Tiu, and Kam Tong in It Happened at the World's Fair (1963)

Elvis Presley, Joan O'Brien, and Vicky Tiu in It Happened at the World's Fair (1963)

Elvis Presley and Gary Lockwood in It Happened at the World's Fair (1963)

Elvis Presley and Vicky Tiu in It Happened at the World's Fair (1963)

Elvis Presley and Yvonne Craig in It Happened at the World's Fair (1963)

Joan O'Brien in It Happened at the World's Fair (1963)