MARFÉ FERGUSON DELANO is the author of 16 National Geographic books, including Genius: A Photobiography of Albert Einstein, which received an Orbis Pictus Honor Book, and Inventing the Future: A Photobiography of Thomas Alva Edison, which received an Orbis Pictus Honor Book. Helen's Eyes: a Photobiography of Annie Sullivan, Master George's People, Explore My World: Butterflies, Explore My World: Frogs, and Welcome to the World are some of her most recent National Geographic titles. Delano is a Duke University graduate.