Third of four Don Quixote films featuring 'Fernando Rey' in some role. In this one, he played Don Quixote. He was previously in Don Quijote de la Mancha (1947) and Don Quijote von der Mancha (1965), and would later be in Don Quijote de Orson Welles (1992).
The miniseries covers only the first half of the novel. Director Manuel Gutierrez Aragon filmed the second half eleven years later as a theatrical release, "El Caballero Don Quijote". He used an entirely different cast for the second film.