Titles by Harl Vincent marked with tag: Martians
- 1934 - Lost City of Mars
- 1934 - The Barrier
- 1933 - When the Comet Returned
- 1932 - Creatures of Vibration
- 1932 - Roadways of Mars
- 1932 - Thia of the Drylands
- 1932 - Water-Bound World
- 1931 - Invisible Ships
- 1930 - Before the Asteroids
- 1930 - Vagabonds of Space
- 1928 - The Ambassador from Mars