Passionate Productions for BBC ; produced for NOVA by Holt Productions, LLC ; WGBH Boston ; produced and directed by Jemima Harrison and Sarah Holt ; writer for the BBC, Jemima Harrison ; executive producer for the BBC, Richard Klein ; senior executive producer, Paula S. Apsell
A production of The Documentary Guild in association with WGBH Boston for Nova ; WGBH Educational Foundation ; Executive editor, William Grant ; executive producer, Paula S. Apsell ; written, produced and directed by Rob Whittlesey and Noel Buckner
a WGBH production in association with the British Broadcasting Corporation for NOVA ; produced & directed by Carl Charlson ; written by David McCullough
a Nova production by Bonne Pioche and Greenspace for WGBH/Boston ; produced for Nova by Providence Pictures, Inc. for WGBH/Boston ; producer, Gary Glassman ; writer, Antoine de Maximy ; writer and director, Caroline Wrinch ; directed by Antoine de Maximy