Theodor Seuss Geisel, better known as Dr. Seuss, published over 60 children's books over the course of his long career. Though most were published under his well-known pseudonym, Dr. Seuss, he also authored a certain amount of books as Theo. LeSieg and one as Rosetta Stone. As one of the most popular children's authors of all time, Geisel's books have topped many bestseller lists, sold over 222 mi... Wikipedia