Mo Willems Set of 6 Paperback Books Includes Knuffle Bunny: A Cautionary Tale, Elephant & Piggie: My Friend Is Sad, Knuffle Bunny Too: A Case of Mistaken Identity, the Pigeon Finds a Hot Dog, the Pigeon Wants a Puppy!, I Love My New Toy! (The Pigeon Wants A Hot Dog compare prices)