When the Painted Stallion is fighting the black stallion, this scene is taken from The Devil Horse (1926). This battle between stallions has been edited into The Vanishing Legion (1931), Wild Horse Round-Up (1936), Comin' 'Round the Mountain (1936), Hit the Saddle (1937), The Devil Horse (1932), The Phantom of the West (1930), Law of the Wild (1934), and The Painted Stallion (1937). The black stallion is actually the famous Rex the Wonder Horse.
Rin Tin Tin Jr. is never called a German Shepard in this movie. Instead called a "Police dog". Probably because German Shepards' being used by police, was widely accepted by the general public at the time.
Televised as early as 23 June 1948 on WTMJ (Channel 3) in Milwaukee.
Story takes place in July - August of 1934 according to the recites and Bill-of-Sales that are shown. The license plates on cars and trucks are from 1934.
Newsreel stock footage is used for the horse race scenes. Footage shows the Westchester Handicap from 1931. Questionnaire is #3 horse and Charles Kurtsinger is the jockey.