Jon Klassen is the creator of the #1 New York Times best-selling I Want My Hat Back, which won a Theodor Seuss Geisel Honor, and its companions: This Is Not My Hat, which won a Caldecott Medal and a Kate Greenaway Medal, and We Found a Hat, named a Publishers Weekly Best Children's Book of the Year. He is also the author-illustrator of The Rock from the Sky and the illustrator of Extra Yarn, Sam and Dave Dig a Hole, Triangle, Square, and Circle, all by Mac Barnett; House Held Up by Trees by Ted Kooser; the Skunk and Badger series by Amy Timberlake; and the middle-grade Pax series by Sara Pennypacker. Originally from Niagara Falls, Ontario, Jon Klassen now lives in Los Angeles.