Matthew Cordell is the author and illustrator of many celebrated picture books, including Hello, Neighbor!: The Kind and Caring World of Mister Rogers, and Wolf in the Snow, recipient of the 2018 Caldecott Medal. As an illustrator he has collaborated with many more authors including Gail Carson Levine, Philip C. Stead, and Rebecca Kai Dotlich. Matthew lives with his wife, author Julie Halpern, and their two children in suburban Chicago.