Books about Human-alien encounters -- Fiction (sorted by popularity)
- The Third Little Green Man Damon Knight 67 downloads
- Spacemen lost George O. Smith 67 downloads
- The Inhabited Richard Wilson 67 downloads
- Secret of the Martians Paul W. Fairman 67 downloads
- Under the Skin Leslie Perri 67 downloads
- Satisfaction Guaranteed Joy Leache 67 downloads
- Angel's Egg Edgar Pangborn 67 downloads
- The Very Secret Agent Mari Wolf 67 downloads
- Peril of the Starmen Kris Neville 67 downloads
- The Conquistadors Come Mary Elizabeth Counselman 66 downloads
- Planet of No-Return Wilbur S. Peacock 66 downloads
- The Contact Point Jack Sharkey 66 downloads
- Little men of space Frank Belknap Long 66 downloads
- The Next Time We Die Robert Moore Williams 66 downloads
- Blueblood Jim Harmon 66 downloads
- Battle for the Stars Edmond Hamilton 66 downloads
- Lesson for Today Joel Nydahl 66 downloads
- License to Steal Louis Newman 66 downloads
- Star-Crossed Lover William W. Stuart 66 downloads
- Citadel of the Green Death Robert Emmett McDowell 66 downloads
- The Little Pets of Arkkhan Bill Garson 66 downloads
- Amour, Amour, Dear Planet! Mark Clutter 66 downloads
- An Incident on Route 12 James H. Schmitz 66 downloads
- Routine for a Hornet Don Berry 66 downloads
- The Hitch Hikers Vernon L. McCain 66 downloads