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20 Best-Selling Children’s Books of All Time

"The Cat in the Hat"
The Cat in the Hat
The Cat in the Hat
Image courtesy of Random House

Author: Dr. Seuss

Copies Sold: 7.2 million


Millions of Johnnies and Janes have learned to read because of Dr. Seuss and a silly cat in a hat. In the 1950s, many believed that children's books were boring. Such literature, they lamented, did not engage children. That was until Dr. Seuss, a.k.a., Theodor Geisel, penned "The Cat in the Hat," about a mischievous feline that visits a brother and sister alone in a house on a rainy day. Although it wasn't his first book, Seuss knew it would be special. "We've got a possibility of making a tremendous noise in the noisy discussion of why Johnny can't read," Seuss said prior to publication.