Books about Human-alien encounters -- Fiction (sorted by popularity)
- Restricted Tool Malcolm B. Morehart 62 downloads
- Pogo Planet Donald A. Wollheim 62 downloads
- Felony James Causey 62 downloads
- The Little Monsters Come Ray Cummings 62 downloads
- Reign of the telepuppets Daniel F. Galouye 61 downloads
- The Pacifists Charles E. Fritch 61 downloads
- Bunzo Farewell Charles V. De Vet 61 downloads
- The Toy Kris Neville 61 downloads
- Satellite of Death Randall Garrett 61 downloads
- A Matter of Taste Jr. L. J. Stecher 60 downloads
- Joe Carson's Weapon James R. Adams 60 downloads
- Meteor-Men of Mars Harry Cord and Otis Adelbert Kline 60 downloads
- The Course of Logic Lester Del Rey 60 downloads
- Girl of the Silver Sphere J. Harvey Haggard 60 downloads
- The Ambassadors From Venus Kendell Foster Crossen 60 downloads
- The Good Neighbors Edgar Pangborn 60 downloads
- Short Snorter Charles Einstein 60 downloads
- Secret of the Martians Paul W. Fairman 60 downloads
- The Time of Cold Mary Carlson 60 downloads
- Miss Tweedham's Elogarsn Robert Moore Williams 59 downloads
- Prelude to Space Robert W. Haseltine 59 downloads
- Ticket to the Stars Raymond E. Banks 59 downloads
- Hellflower George O. Smith 59 downloads
- Planet of Doom Stephen Marlowe 59 downloads
- Under the Skin Leslie Perri 59 downloads