Here's a breakdown:
* Books: He wrote and illustrated over 60 children's books, including classics like *The Cat in the Hat*, *Green Eggs and Ham*, and *How the Grinch Stole Christmas*.
* Magazines: He wrote and illustrated for magazines like *Life* and *Redbook*, but this was mainly in the early stages of his career. He also wrote short stories for *The Saturday Evening Post* under the pseudonym "Theo LeSieg".
Therefore, Dr. Seuss is most recognized for his books, and that's where his legacy primarily lies.