a BBC/WGBH Boston/ProSieben co-production [in association with France 3 ; produced and directed by John Hayes Fisher ; produced for Nova by Gary Glassman ; senior executive producer, Paula S. Apsell
Instituto Nacional de Antropología e Historia ; John Simon Guggenheim Memorial Foundation ; guión, Ethelia Ruiz Medrano ; filmación y dirección, Helios Figueroa