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
WGBH in coproduction with KOCE, German and French TV Corporation for Public Broadcasting ; executive producer, David Fanning ; producer and writer, Judith Vecchione ; director, Judith Vecchione, Andre Libik
PBS ; executive producer, Sharon Grimberg ; an American Experience film in association with Apograph Productions Inc., Tecumseh LLC, Firelight Media, and Native American Public Telecommunications ; WGBH Educational Foundation ; WGBH-Boston