- Series: Adventures in the Unknown Series Record # 27595
- Adventures in the Unknown
- 1
The Mystery Men of Mars (1931)
by
Carl H. Claudy
also appeared as:
- Variant: The Master Minds of Mars (1931)
- 2 A Thousand Years a Minute (1933) by Carl H. Claudy
- 3 The Land of No Shadow (1933) by Carl H. Claudy
- 4 The Blue Grotto Terror (1934) by Carl H. Claudy
- 1
The Mystery Men of Mars (1931)
by
Carl H. Claudy
also appeared as:
