written and produced by Peter A. Steen ; director, Bruce Nash ; created by Bruce Nash ; produced by Actuality Productions, Inc. for the History Channel
produced by Actuality Productions, Inc. [for] History Television Network Productions ; The History Channel ; written and produced by Holly A. Murdoch and Nancy Oey ; producer: Bruce Nash ; created by Bruce Nash
Jaffe Productions in association with Hearst Entertainment Television ; the History Channel ; A&E Home Video ; producer, Bruce Nash ; written and produced by Andy Thomas ; created by Bruce Nash
written and produced by Beata Genin ; producer, Bruce Nash ; produced by Actuality Productions, Inc., History Television Network Productions ; A&E Television Network