Mary Ellen Mark (1940-2015) achieved worldwide visibility through her numerous books, exhibitions, and editorial magazine work. She was a contributing photographer to the New Yorker and published photo-essays and portraits in Life, New York Times Magazine, Rolling Stone, and Vanity Fair. Her books include Seen Behind the Scene: Forty Years of Photographing on the Set (Phaidon, 2008), Exposure (Phaidon, 2006), and Twins (Aperture, 2005). Martin Bell is a filmmaker whose film Streetwise was nominated for an Academy Award. He has collaborated with Mary Ellen Mark on several projects, including his films Twins, Circus of Dreams, Alexander, and Streetwise.