Mac Barnett is the New York Times-bestselling author of many children’s books, including the New York Times bestseller The Wolf, the Duck, and the Mouse; the Caldecott Honor Book and E.B. White Read Aloud Award-winner Sam and Dave Dig a Hole; and the Caldecott Honor Book and Boston Globe-Horn Book Award-winner Extra Yarn. He is also the coauthor of the bestselling Terrible Two series with Jory John, and the co-creator, with Jon Klassen, of Shape Island, a stop-motion animated series on Apple TV+, based on their bestselling Shapes Trilogy. Mac lives in Oakland, California.

Shawn Harris is an award-winning creator of books for kids. His authorial debut, Have You Ever Seen a Flower, was called a “stunning tour de force…” by The New York Times, and was the recipient of a Caldecott Honor. His picture book The Teeny-Weeny Unicorn received two starred reviews. Harris has illustrated a number of other books, including The Eyes and the Impossible by Dave Eggers, which won a Newbery Medal, and A Polar Bear in the Snow by Mac Barnett, which received the Bull-Bransom Award for excellence in the field of children’s book illustration with a focus on nature and wildlife. Shawn lives in Northern California, where he also likes to write songs, surf, and play racquetball.