Matthew Cordell is the Caldecott Medal-winning author and illustrator of Wolf in the Snow and Hello Neighbor!: The Kind and Caring World of Mister Rogers, and the illustrator of numerous highly acclaimed children's books including Philip C. Stead's books The Only Fish in the Sea and Special Delivery, which was a Washington Post Best Book. He wrote and illustrated Another Brother, Wish, and Hello! Hello!, a New York Times Notable Children's Book. Matthew lives near Chicago with his wife, author Julie Halpern, and their two children.