Mordicai Gerstein (1935-2019) was the author and illustrator of The Man Who Walked Between the Towers, winner of the Caldecott Medal. Four of his books have been named New York Times Best Illustrated Books of the Year. As a child, Gerstein was inspired by reproductions of fine art that his mother cut out of Life magazine and by children's books from the library: I looked at Rembrandt and Superman, Matisse and Bugs Bunny, and began to make my own pictures. After attending Chouinard Art Institute in Los Angeles, he was hired by an animated cartoon studio where he designed characters and thought up ideas for TV commercials.

Jeff Mack is the author and illustrator of many books for young readers, including Just a Story, Hush Little Polar Bear, Good News, Bad News, and Clueless McGee. He has also illustrated award winning picture books and chapter books such as Eve Bunting's Hurry! Hurry! and James Howe's Bunnicula and Friends. He lives in Western Massachusetts.