a production of the National Museum of American Art, Smithsonian Institution in association with ZGS Communications, Inc. ; executive producers, Andrew Conners ... [and others] ; producer, Shellee Haynesworth ; director, Elizabeth Brown
a NOVA production by the New York Times/Granada Factuals USA and Lone Wolf Pictures, Inc., for WGBH/Boston in association with Channel 4 ; directed by Kirk Wolfinger ; produced & written by Matthew Collins
produced and directed by Michael Kirk ; written by Michael Kirk & Peter J. Boyer ; a Frontline coproduction with Kirk Documentary Group, Ltd. ; WGBH Educational Foundation