This fun series of images was taken from a film strip released by the Encyclopedia Britannica in 1957. Film strips were made for all five lands, but I only have the one for Fantasyland. These views of the Junior Autopia are particularly interesting, you don't find many photos of that attraction...and look how bare that section of the park was! This Autopia opened on June 23, 1956, and was built at least partly on the land formerly occupied by the Mickey Mouse Club Circus. Mark II cars were used, though extensions (wood blocks?!) were added to the pedals so that kids could reach them.
The Junior Autopia closed after only two years, on September 15, 1958. The Fantasyland Autopia replaced it (opening on January 1, 1959).