Mo Willems is a three-time Caldecott Honor winner for Don't Let the Pigeon Drive the Bus!, Knuffle Bunny: A Cautionary Tale and Knuffle Bunny Too: A Case of Mistaken Identity. His celebrated Elephant & Piggie early-reader series has been awarded the Theodor Seuss Geisel Medal on two occasions as well as three Honors. Other favourites include Goldilocks and the Three Dinosaurs and That Is Not a Good Idea. Before he turned to children's books, Mo was a writer and animator on Sesame Street, where he won six Emmy Awards. Mo lives with his family in Northampton, Massachusetts. Find him online at www.mowillems.com and on Twitter as @The_Pigeon. Tony DiTerlizzi is a New York Times bestselling author and illustrator who has been creating books for over a decade. From his fanciful picture books such as The Spider & The Fly (a Caldecott Honor book) to chapter books like Kenny and The Dragon and the WondLa trilogy, DiTerlizzi always imbues his stories with a rich imagination. With Holly Black he created the middle-grade series The Spiderwick Chronicles, which has sold millions of copies, been adapted into a feature film and been translated in over thirty countries. Find him online at www.diterlizzi.com and on Twitter at @TonyDiTerlizzi.