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
producer, David Hestad ; editors, Frank Boll, David Hestad ; executive producer, Diane Kostecke ; [produced by WHA-TV in cooperation with the Wisconsin Department of Agriculture, Trade and Consumer Protection and the Wisconsin Energy Bureau]