Happy Easter to all! It has been fairly traditional at Disneyland to use the White Rabbit and his mythical spouse to be the unofficial Easter mascots, along with the other Disney bunnies like Thumper and Brer Rabbit. They must be second cousins to the Easter Bunny.
As such, and oddly enough, they were immortalized in trading cards. This is card 28 of the Donruss Disneyland Tencennial trading card set from 1965, featuring Mr. and Mrs. Rabbit visiting the flower market hunting Easter eggs on Main Street, USA.
The above is the more common puzzle back, but there is also a blue back as seen below.