The Primal Law (1921)
silent cowboy western starring Dustin Farnum as a rancher whose partner is killed by rustlers. He takes in his partner's young son, and begins to sell his ranch, but the boy finds oil on the land.
Directed by: Bernard J. Durning
Starring: Dustin Farnum, Mary Thurman, Harry Dunkinson, Philo McCullough, William Lowery, Charles Gorman
Links: IMDb, Movie posters, Movie stills