Churchill Pictures ; a BBC-tv production in association with RKO Pictures, Inc., Canale 5, Italy, FR3, France, YLE, Finland ; producer, John Lynch ; written and presented by James Burke
a co-production of FIT Production, La Cinquième, and Canal Sur Televisión ; un film conc̦u et écrit par Mahmoud Hussein ; réalisé par Philippe Calderon
a presentation of Microangelo Educational Media LLC by arrangement with Public Media, Inc. and SOGEPAQ ; Sogetel presents in association with the Smithsonian Institution, Quinto Centenario España a series produced by Michael Gill ; written and presented by Carlos Fuentes ; producer, Annie Dodds