An exhibition of Dr. Seuss’s whacky hat collection in New York City

The owner of hundreds of hats of every description, Geisel kept them in a closet hidden behind the bookcase in his San Diego home.

Random House Children’s Books, longtime publisher of the Dr. Seuss books, has collaborated with Dr. Seuss Enterprises on a traveling exhibition of the writer’s whacky hats, which are being displayed to the public for the first time.

The hats—which include a striped, red-and-white stovepipe hat that looks exactly like the one “The Cat in the Hat” wears—is now on display at the New York Public Library.