Leonard S. Marcus is one of the world's leading writers about children's books and the people who create them. His own award-winning books include Randolph Caldecott: The Man Who Could Not Stop Drawing; Listening for Madeleine: A Portrait of Madeleine L'Engle in Many Voices; Dear Genius: The Letters of Ursula Nordstrom; Minders of Make Believe; The Annotated Phantom Tollbooth; Mr. Lincoln Sits for His Portrait: The Story of a Photograph That Became an American Icon; and Earthrise: The Story of the Photograph That Changed the Way We See Our Planet. He lives in Brooklyn, New York.