Books about Human-alien encounters -- Fiction (sorted by popularity)
- The Little Pets of Arkkhan Bill Garson 77 downloads
- The Onslaught from Rigel Fletcher Pratt 77 downloads
- Task of Kayin Joseph Samachson 77 downloads
- All That Earthly Remains C. C. MacApp 77 downloads
- Attitude Hal Clement 77 downloads
- The Fool David Mason 77 downloads
- You Don't Walk Alone Frank M. Robinson 77 downloads
- Operation Terror Murray Leinster 77 downloads
- The Best of Fences Randall Garrett 77 downloads
- Secret of the Martians Paul W. Fairman 77 downloads
- Planet of Doom Stephen Marlowe 77 downloads
- Home is the Spaceman George O. Smith 77 downloads
- Star of Panadur Henry Hasse and Albert dePina 76 downloads
- Revolt in the Ice Empire Ray Cummings 76 downloads
- Big Stupe Charles V. De Vet 76 downloads
- Men Without a World Joseph Farrell 76 downloads
- A Message From Our Sponsor Henry Slesar 76 downloads
- And Then the Town Took Off Richard Wilson 76 downloads
- Open Invitation H. B. Fyfe 76 downloads
- Export Commodity Irving E. Cox 76 downloads
- Meteor-Men of Mars Harry Cord and Otis Adelbert Kline 76 downloads
- Definition Damon Knight 76 downloads
- Grounded William Sambrot 76 downloads
- The Cosmic Bluff Mack Reynolds 76 downloads
- Firegod Algis Budrys 76 downloads