Claim: Christmas Flintstone, in which Fred Flintstone takes over as Santa Claus at the Macyrock's department store, originally aired on Christmas Day in 1964.
Evidence: The episode is about Fred Flintstone taking over the role of Santa Claus. Fred gets a part-time job at Macyrock's department store in order to help finance the family's Christmas. December 25, 1964 (1964-12-25)