a Nova production by Ark Media in association with Realization Pictures ; written and directed by Phil Bertelsen ; produced by Phil Bertelsen and Jane Teeling
written and produced by Christine Lesiak ; co-produced by Matthew L. Jones ; a production of the Native American Public Broadcasting Consortium and the Nebraska Educational Television Network for the American experience ; presented by WGBH/Boston, WNET/New York and KCET/Los Angeles
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