Books about Extraterrestrial beings -- Fiction (sorted by popularity)
- 30-day wonder Richard Wilson 67 downloads
- Peacemaker Alan Edward Nourse 66 downloads
- Sweet Tooth Robert F. Young 66 downloads
- Indirection Everett B. Cole 64 downloads
- Amateur in Chancery George O. Smith 64 downloads
- Birds of a Feather Robert Silverberg 63 downloads
- Out Around Rigel Robert H. Wilson 63 downloads
- Peace Norman Arkawy and Stanley Henig 62 downloads
- Founding Father Jesse F. Bone 62 downloads
- Planet of the Gods Robert Moore Williams 62 downloads
- A Transmutation of Muddles H. B. Fyfe 61 downloads
- The Onslaught from Rigel Fletcher Pratt 61 downloads
- Citadel of the Star Lords Edmond Hamilton 61 downloads
- Extracts from the Galactick Almanack: Music Around the Universe Laurence M. Janifer 61 downloads
- Savage Galahad Bryce Walton 59 downloads
- The Test Colony Winston K. Marks 59 downloads
- The green girl Jack Williamson 59 downloads
- The silent invaders Robert Silverberg 58 downloads
- Rough Beast Roger D. Aycock 58 downloads
- On the Fourth Planet Jesse F. Bone 58 downloads
- Alien Offer Al Sevcik 57 downloads
- Community Property Alfred Coppel 56 downloads
- The Sentimentalists Murray Leinster 56 downloads
- Alien Minds E. Everett Evans 56 downloads
- The Invader Alfred Coppel 56 downloads