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
written by Stephen Lyons & Llewellyn M. Smith ; directed by Llewellyn M. Smith ; produced by Llewellyn M. Smith, Stephen Lyons ; a Nova production for WGBH Boston ; WGBH Educational Foundation
a Nova production by Hamilton Land & Cattle, Inc. for WGBH-Boston ; WGBH Educational Foundation ; Written and produced by Doug Hamilton ; associate producer: Solana Pyne
produced by Mary Olive Smith and Steven Engel ; directed by Mary Olive Smith and Amy Bucher ; an Engel Entertainment production in association with Nova
written & directed by John L. Valadez ; produced by John L. Valadez ; a co-production of John J. Valadez, WGBH/Boston and the Independent Television Service in association with Latino Public Broadcasting