About the Author

Mac Barnett is the author of several books for children, including Extra Yarn, illustrated by Jon Klassen, which won a Caldecott Honor and a Boston Globe–Horn Book Award; Sam and Dave Dig a Hole, The Wolf, the Duck, and the Mouse, and the Shape series, Triangle, Square and Circle, all also illustrated by Jon Klassen; and President Taft Is Stuck in the Bath, illustrated by Chris Van Dusen. Mac Barnett lives in California, USA.

Shawn Harris is an artist and musician who began his career by doing record and poster art for his band, the Matches, in 2003. Since then he has created art for musicians such as Adele, Snoop Dogg and 311. His first picture book, Her Right Foot, was written by Dave Eggers. Shawn Harris lives in California, USA.