Books about Human-alien encounters -- Fiction (sorted by popularity)
- Redevelopment George O. Smith 55 downloads
- Venus Enslaved Manly Wade Wellman 55 downloads
- The Huddlers William Campbell Gault 55 downloads
- The Plagiarist From Rigel IV Evan Hunter 54 downloads
- The Very Secret Agent Mari Wolf 54 downloads
- Vocation George O. Smith 54 downloads
- Quest of Thig Basil Wells 54 downloads
- The Sword of Johnny Damokles Hugh Frazier Parker 54 downloads
- Doorstep Keith Laumer 54 downloads
- Crisis! C. M. Kornbluth 53 downloads
- The night of no moon H. B. Fyfe 53 downloads
- Gravy Train Daniel F. Galouye 53 downloads
- Out of Mind William W. Stuart 53 downloads
- Peril of the Starmen Kris Neville 53 downloads
- You Don't Walk Alone Frank M. Robinson 53 downloads
- The Good Seed Mack Reynolds 53 downloads
- Cultural Exchange Jesse F. Bone 52 downloads
- Peril of the Blue World Robert Abernathy 52 downloads
- Star of Panadur Henry Hasse and Albert dePina 52 downloads
- Survival Type Jesse F. Bone 52 downloads
- The Weather on Mercury Joseph Samachson 52 downloads
- The Little Pets of Arkkhan Bill Garson 52 downloads
- The Star Beast Damon Knight 52 downloads
- The Gravity Business James E. Gunn 52 downloads
- Export Commodity Irving E. Cox 52 downloads