a film by Ken Burns and Lynn Novick ; a Florentine Films production in association with WETA-TV, Washington ; produced by Ken Burns, Lynn Novick, Peter Miller ; written by Geoffrey C. Ward
producer [for Tigress Productions], Sarah Williams ; director, Justine Kershaw ; producers [for WNET-Nature], Jessica Siegel, Jill Clarke ; a Tigress production ; a co-production of Thirteen/WNET and the BBC
a Tigress production in association with Devillier Donegan Enterprises & PBS ; writers, Anne MacLeod, James Sasse ; executive producer, Jeremy Bradshaw
a co-production of ABC/Kane Productions and the BBC, in association with Trebitsch Produktion International GmbH and PBS ; executive producers, Alex Gregory and Dennis B. Kane ; written by Alex Gregory ; produced by Neil Lucas