Jon Klassen won the 2013 Caldecott Medal for the most distinguished picture book for This Is Not My Hat published by Candlewick Press. His collaboration with Mac Barnett, Extra Yarn, was a 2013 Caldecott Honor Book.
Jon grew up in Niagara Falls, Canada, and now lives in Los Angeles, California. He is the author and illustrator of I Want My Hat Back, as well as the illustrator of Cats’ Night Out by Caroline Stutson, Extra Yarn by Mac Barnett, and the other books in the Incorrigible Children of Ashton Place series. He also created concept art for Coraline, the stop-motion animated film based on the book by Neil Gaiman. Source