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