According to director Lee Sholem, both Phyllis Coates and George Reeves were knocked cold on the same day in fights involving stuntmen.
Included as a special feature in Warner Home Video's 2005 DVD release of the TV series "Adventures of Superman - The Complete First Season".
Included as a special feature on the 4th disk of the Christopher Reeve Superman Collection and The Complete Superman Collection DVD
Originally Kirk Alyn was to be Superman after the two serials but wanted too much money.
Over a year after this film's release, it was split up and used to make a "two-parter" to close the first season of Adventures of Superman.