Theodor Seuss Geisel (March 2, 1904 – September 24, 1991) was a famous American writer and cartoonist best known for his classic children's books under the pen name Dr. Seuss, including The Cat in the Hat, Green Eggs and Ham, How the Grinch Stole Christmas and One Fish Two Fish Red Fish Blue Fish. His books have become staples for many children and their parents. Seuss' trademarks were his rhyming text and his outlandish creatures. He wrote and illustrated 44 children's books.