a film by Frank Martin ; directed by Frank Martin ; written by Frank Martin & Jeff Stetson ; produced by Frank Martin, Rudy Poe, James Crite ; story by James Crite, Jeff Stetson ; an Eleventh Day Entertainment Production
a film by Werner Herzog ; a Werner Herzog Filmproduktion in association with Café Productions for ZDF ; BBC ; produced, directed and narrated by Werner Herzog ; executive producer, Lucki Stipetić
a Florentine Films production ; produced in association with WETA Washington, DC ; produced by David Schaye, Paul Barnes, Ken Burns ; written by Geoffrey C. Ward ; directed by Ken Burns