Books about Human-alien encounters -- Fiction (sorted by popularity)
- The Purple Pariah Byron Tustin 25 downloads
- The small bears Gene L. Henderson 25 downloads
- Mind Worms Moses Schere 25 downloads
- Shock Troop Richard Bolton 25 downloads
- The Margenes Miriam Allen De Ford 25 downloads
- Jabberwock, Beware! Richard A. Sternbach 25 downloads
- Big Stupe Charles V. De Vet 25 downloads
- Home is the Spaceman George O. Smith 24 downloads
- The Time-Techs of Kra Max C. Sheridan 24 downloads
- World of Mockery Sam Moskowitz 24 downloads
- Dawningsburgh Wallace West 24 downloads
- Threlkeld's Daughter James Bell 24 downloads
- Rhythm rides the rocket Bob Olsen 23 downloads
- To the sons of tomorrow Irving E. Cox 23 downloads
- Specimen Charles V. De Vet 22 downloads
- The Faces Outside Bruce McAllister 22 downloads
- The Vanisher Michael Shaara 21 downloads
- Gunnison's Bonanza Dick Purcell 21 downloads
- The Pure Observers B. J. Rogers 21 downloads
- Marty the Martian Arnold Marmor 20 downloads
- The Ultimate Eve H. Sanford Effron 20 downloads
- The Thing of Venus Wilbur S. Peacock 20 downloads
- Spoilers of the Spaceways W. Bradford Martin 18 downloads
- No Sons Left to Die! Hal Annas 18 downloads
- The man who liked lions John Bernard Daley 17 downloads