Un película dirigida por Alberto Cortés ; director, Alberto Cortés ; guión, Hermann Bellinghausen, Alberto Cortés ; procida por Ana Solares, Alberto Cort́s
a film by Nettie Wild ; a Canada Wild production ; in association with the Canadian Broadcasting Corporation ; produced by Nettie Wild, Kirk Tougas, Betsy Carson ; written by Nettie Wild, Manfred Becker
Canada Wild Productions Ltd. in association with the Canadian Broadcasting Corporation ; a film by Nettie Wild ; produced by Nettie Wild, Kirk Tougas, Betsy Carson ; written by Nettie Wild, Manfred Becker
a Florentine Films production ; a film by Ken Burns ; written by Geoffrey C. Ward ; produced by Paul Barnes, Pam Tubridy Baucom, Ken Burns ; produced in association with WETA Washington, DC ; executive producer, Ken Burns