Ken Geist is an editor of children's books. He lives in New York City with his joyous twins, Owen and Kei--the inspiration for Who's Who?--along with his two older singletons.
Henry Cole is the acclaimed illustrator of nearly 100 children's books. He has twin hobbies of gardening and drawing, and twin homes, one in Florida and one in Virginia. Visit him online at henrycole.net.