Mac Barnett was named the 2025–26 National Ambassador for Young People’s Literature by the Library of Congress. He’s the author of more than sixty books for children, including Sam & Dave Dig a Hole, illustrated by Jon Klassen, which won a Caldecott Honor and the E. B. White Read Aloud Award. Mac’s books include the First Cat in Space graphic novels and the picture book A Polar Bear in the Snow, all illustrated by Shawn Harris. He lives in Oakland, California.

Adam Rex is the New York Times bestselling author and illustrator of Frankenstein Makes a Sandwich. His other books include The True Meaning of Smekday, which was made into the hit animated movie Home; Moonday; and School’s First Day of School, illustrated by Christian Robinson. He also illustrated the Brixton Brothers series, Billy Twitters and His Blue Whale Problem, Chloe and the Lion, and How This Book Was Made, all by Mac Barnett, and Chu’s Day, by Neil Gaiman. He lives in Tucson, Arizona. Visit him at AdamRex.com or follow him on Twitter @MrAdamRex.