Narrated by Orson Welles, this documentary about wild mustangs in the American West, particularly on their being killed for use as dog food, was presented by the Leo Burnett Ad Agency to Phi... Read allNarrated by Orson Welles, this documentary about wild mustangs in the American West, particularly on their being killed for use as dog food, was presented by the Leo Burnett Ad Agency to Philip Morris as a promotional piece for Marlboro.Narrated by Orson Welles, this documentary about wild mustangs in the American West, particularly on their being killed for use as dog food, was presented by the Leo Burnett Ad Agency to Philip Morris as a promotional piece for Marlboro.