Books about Human-alien encounters -- Fiction (sorted by popularity)
- Action on Azura Robertson Osborne 44 downloads
- The Frightful Ones Richard Maples 44 downloads
- Planet of Sand Murray Leinster 44 downloads
- Growing up on Big Muddy Charles V. De Vet 44 downloads
- Planet of Doom Stephen Marlowe 44 downloads
- Hop O' My Thumb Joseph Samachson 44 downloads
- Prison Planet Wilson Tucker 44 downloads
- The Serpent River Don Wilcox 44 downloads
- Prodigal Weapon Bill Garson 44 downloads
- Men Without a World Joseph Farrell 44 downloads
- Never Trust a Thief! Robert Silverberg 44 downloads
- The Birds of Lorrane William R. Doede 44 downloads
- Beware, the Usurpers! Robert W. Krepps 43 downloads
- The Unprotected Species Melvin Sturgis 43 downloads
- Traitor's Choice Paul W. Fairman 43 downloads
- Short Snorter Charles Einstein 43 downloads
- The Inhabited Richard Wilson 43 downloads
- War-Gods of the Void Henry Kuttner 43 downloads
- The Thing in the Truck Stephen Marlowe 43 downloads
- Don't Panic! Robert W. Krepps 43 downloads
- The Moon Maid Edgar Rice Burroughs 43 downloads
- Rockabye, Grady David Mason 42 downloads
- The Fool David Mason 42 downloads
- The Brain Sinner Alan Edward Nourse 42 downloads
- Tourists to Terra Mack Reynolds 42 downloads