Books about Extraterrestrial beings -- Fiction (sorted by popularity)
- A Transmutation of Muddles H. B. Fyfe 81 downloads
- Peacemaker Alan Edward Nourse 80 downloads
- Short Snorter Charles Einstein 79 downloads
- Founding Father Jesse F. Bone 79 downloads
- Birds of a Feather Robert Silverberg 78 downloads
- A trace of memory Keith Laumer 77 downloads
- D-99: a science-fiction novel H. B. Fyfe 77 downloads
- The Ultimate Eve H. Sanford Effron 77 downloads
- Today is Forever Roger D. Aycock 76 downloads
- Trajectory to Taurus Les Cole 76 downloads
- Sweet Tooth Robert F. Young 75 downloads
- The Sentimentalists Murray Leinster 74 downloads
- The Next Time We Die Robert Moore Williams 73 downloads
- The Test Colony Winston K. Marks 72 downloads
- The Last Monster Gardner F. Fox 72 downloads
- The Earthman Irving E. Cox 72 downloads
- The Missing Disclaimer Samuel J. Sackett 71 downloads
- A Toothache on Zenob Boyd Ellanby 71 downloads
- The Toy Kris Neville 70 downloads
- Le peuple du Pôle (French) Charles Derennes 70 downloads
- Peace Norman Arkawy and Stanley Henig 69 downloads
- The Gift Bearer Charles L. Fontenay 69 downloads
- The Weather on Mercury Joseph Samachson 69 downloads
- The Lonely Judith Merril 69 downloads
- Feet of Clay Robert Hoskins 67 downloads