Was filmed on location at the site of the New York's World Fair, with LaGuardia Airport being so close it caused trouble with the filming because of noise from the planes.
With the second set of opening credits, it is stated the actors' name are in alphabetical order. However, Sessue HaYakawa is placed before Margaret HaMilton.
As the live-action Chris floats downstream in his boat without rowing, the black flippers of a diver propelling the boat from underneath can be seen breaking the water.