HELEN PALMER was a children's book author and editor who--along with her husband, Theordor Seuss Geisel (aka Dr. Seuss)--founded Beginner Books, a division of Random House that specialized in books aimed at Beginning Readers, like
The Cat in the Hat. P. D. EASTMAN, a self-described writer-visualizer, wrote and illustrated many popular children's books, among them
Are You My Mother? and
Go, Dog. Go!