written by Stephen Lyons & Llewellyn M. Smith ; directed by Llewellyn M. Smith ; produced by Llewellyn M. Smith, Stephen Lyons ; a Nova production for WGBH Boston ; WGBH Educational Foundation
a Florentine Films production ; directed by Ken Burns ; written by Dayton Duncan ; produced by Dayton Duncan, Ken Burns, Julie Dunfey ; produced in association with WETA Washington, DC ; a film by Ken Burns
produced by David Lawson & Lina Gopaul ; directed by John Akomfrah ; produced by Smoking Dogs Films in association with Cactus Three and Sundance Productions for PBS, BBC, France 3 TV