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 Perpetual Motion Films for the History Channel ; produced & directed by Monte Markham ; written by Lee Fulkerson ; producer, Klaire Markham ; producer/Japan, John Junkerman
director, David W. Padrusch ; producers, Matt Koed, David W. Padrusch ; writers, Matt Koed, Sara Padrusch, and David W. Padrusch ; produced by Limulus Productions, Inc. for the History Channel