United States -- Social conditions -- 20th century -- Pictorial works. : Gordon Parks : collected works / co-editors, Peter W. Kunhardt, Jr., Paul Roth ; texts, Henry Louis Gates, Jr., Deborah Willis, Maurice Berger, Gordon Parks, Barbara Baker Burrows, Paul Roth, George Philip LeBourdais; archives, The Gordon Parks Foundation at Purchase College, Library of Congress, University of Louisville, Time-Life.