 The film was shot at the end of January 1968 in Arizona, on location  in Old Tucson and at the Rancho Linda Vista Dude ranch 20 miles  outside the city where some John Wayne (I) (qv) movies had been  filmed. It was edited by Andy Warhol (qv) while he was  recuperating from wounds suffered when he was shot by  Valerie Solanis (qv) on June 3, 1968,