Mac Barnett’s bestselling children’s books include the 2013 Caldecott Honor Book Extra Yarn. He lives in Berkeley, California.

Jory John is a New York Times bestselling author of books for both children and adults. He is a two-time E.B. White Read-Aloud Honor recipient. Jory's work includes the picture books Giraffe Problems and Penguin Problems, both illustrated by Lane Smith, the Goodnight Already! series, illustrated by Benji Davies, The Bad Seed and The Good Egg, both illustrated by Pete Oswald, and the award-winning Quit Calling Me a Monster!, illustrated by Bob Shea. He also co-authored numerous humor books, including the internationally bestselling All My Friends Are Dead. Jory spent six years as programs director at 826 Valencia, a nonprofit educational center in San Francisco. He resides in Oregon.

Kevin Cornell is the illustrator of many children’s books. He lives in Philadelphia.