a Nova production by Ark Media in association with Realization Pictures ; written and directed by Phil Bertelsen ; produced by Phil Bertelsen and Jane Teeling
a co-production of the Saint/Hayden Co. ; South Carolina ETV ; and Nebraska ETV ; produced by Jeffrey Hayden and Kelley Cauthen ; written and directed by Jeffrey Hayden
produced by Michael Kirk, Marina Kalb ; written and directed by Michael Kirk ; a co-production of the Kirk Documentary Group, Ltd. and WGBH Educational Foundation
a Florentine Films production ; written, produced & directed by Ken Burns ; producer, Christopher Darling ; produced in association with WETA Washington, DC
co-production of Quest Productions, VideoLine Productions and Thirteen/WNET New York ; series producer, Richard Wormser ; producers, Sam Pollard, Bill Jersey, Richard Wormser ; directors, writers, Bill Jersey, Richard Wormser