If you grew up in the ’70s and ’80s, there’s a good chance that you had at least one Fisher-Price toy sitting on the living room floor, waiting to trip your dad. But these weren’t just toys.

Question: I would appreciate anything you can tell me about a Fisher-Price pull toy with box given to a relative in 1937. Marked “120,” it is a 9-inch-long wooden duck on wheels dressed in a large, ...