Books about Human-alien encounters -- Fiction (sorted by popularity)
- The Ambassadors From Venus Kendell Foster Crossen 35 downloads
- Thunder in the void Henry Kuttner 35 downloads
- The Giants From Outer Space Robert W. Krepps 35 downloads
- The Time of Cold Mary Carlson 34 downloads
- Children of the Chronotron S. J. Byrne 34 downloads
- The Time-Techs of Kra Max C. Sheridan 34 downloads
- Joe Carson's Weapon James R. Adams 34 downloads
- Armageddon, 1970 Robert W. Krepps 34 downloads
- Home is the Spaceman George O. Smith 33 downloads
- Grounded William Sambrot 33 downloads
- Cosmic Saboteur Frank M. Robinson 33 downloads
- Beach Scene Marshall King 33 downloads
- The Margenes Miriam Allen De Ford 33 downloads
- A world to die for Sam Carson 33 downloads
- The Poors Harry Lorayne 33 downloads
- A Planet Named Joe Evan Hunter 33 downloads
- Treasure of Triton Charles A. Baker 32 downloads
- Steel Giants of Chaos James R. Adams 32 downloads
- Meeting at the Summit Ivar Jorgensen 32 downloads
- The Victory of Klon Wilbur S. Peacock 32 downloads
- Monster of the Asteroid Ray Cummings 32 downloads
- Trajectory to Taurus Les Cole 31 downloads
- Specimen Charles V. De Vet 31 downloads
- World of Mockery Sam Moskowitz 31 downloads
- Big Stupe Charles V. De Vet 30 downloads