 According to Joseph McBride (qv)s "Searching for John John",  John Ford (I) (qv) was urged to cast Richard Boone (I) (qv) and  Anthony Quinn (qv) as the Little Wolf and Dull Knife characters,  as both had Native American blood. Ricardo Montalban (qv) and  Gilbert Roland (qv), who were of Mexican descent, were cast  instead.