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 production of WGBH Boston and WITF, Harrisburg; produced by Beth Hager and Randall MacLowry ; written by Ken Emerson and Randall MacLowry ; director, Randall MacLowry
WGBH/Boston ; written, produced, and directed by Susanne Simpson in association with NTV International Corporation for Nova ; produced, directed and written by Suzanne Simpson
presented by WGBH/Boston, WNET/New York, KCET/Los Angeles ; writer and producer, Neil Goodwin ; a Peace River Films production for The American experience
a WGBH production in association with the British Broadcasting Corporation for Nova ; written and presented by David McCullough ; produced and directed by Carl Charlson
a co-production of David Sutherland Productions, Inc. and Frontline in association with The Independent Television Service ; written, produced, directed and edited by David Sutherland
photographed by Lennart Nilsson ; written by Thomas Friedman ; directed by Mikael Agaton ; produced by Mikael Agaton, Thomas Friedman, Lars Rengfelt ; a coproduction between Swedish Television ... [and others] ; WGBH Boston
a PBS digital presentation ; a Gemini Productions film for the WGBH/Nova Science Unit and Clear Blue Sky Productions ; written and directed by Gail Willumsen ; produced by Jill Shinefield, Gail Williamson