The Underground World 1943
Superman has to save Lois Lane from a cult of hawk-people in an homage to Edgar Rice Burroughs's "At the Earth's Core".
- Released: 1943-06-18
- Runtime: 8 minutes
- Genre: Animation, Action
- Stars: Bud Collyer, Joan Alexander, Jackson Beck, Julian Noa
- Director: Seymour Kneitel