Mac Barnett is a New York Times bestselling author of books for children. His picture book Extra Yarn won a 2013 Caldecott Honor and the 2012 Boston Globe-Horn Book Award. He also writes the Brixton Brothers series of mystery novels. He co-wrote Battle Bunny with Jon Scieszka which was a New York Times bestseller. Barnettt's book, Sam and Dave Dig a Hole, illustrated by Jon Klassen, made the New York Times bestseller list in October 2014.