Mac Barnett is the author of many books for children, including Extra Yarn, illustrated by John Klassen, a Caldecott Honor Book and winner of a Boston Globe-Horn Book Award; The Wolf, the Duck, and the Mouse, a New York Times bestseller; Sam and Dave Dig a Hole, a Caldecott Honor Book and winner of the E.B. White Read Aloud Award. Other titles include The Important Thing About Margaret Wise Brown, Chloe and the Lion, and Billy Twitters and His Blue Whale Problem. He is the co-author, with Jory John, of the New York Times bestselling series The Terrible Two. Mac lives in California.

Dan Santat is the Caldecott Medal-winning and New York Times bestselling author and illustrator of The Adventures of Beekle: The Unimaginary Friend, Are We There Yet?, After the Fall, as well as the illustrator including Drawn Together and Lift by Minh Lê, The Alphabet's Alphabet by Chris Harris, and Crankenstein by Samantha Berger. Dan lives in Southern California with his wife, two kids, and various pets. His website is dantat.com.