Books about Human-alien encounters -- Fiction (sorted by popularity)
- Marty the Martian Arnold Marmor 40 downloads
- Pogo Planet Donald A. Wollheim 40 downloads
- The Anglers of Arz Roger D. Aycock 39 downloads
- The Little Pets of Arkkhan Bill Garson 39 downloads
- It Hayden Howard 39 downloads
- The mystery of Deneb IV Robert Silverberg 39 downloads
- Green Grew the Lasses Ruth Laura Wainwright 39 downloads
- A Matter of Taste Jr. L. J. Stecher 39 downloads
- Round-Up Time Chester Cohen 39 downloads
- The Enormous Word William Oberfield 39 downloads
- Project Hi-Psi Frank Riley 39 downloads
- The Madcap Metalloids Verne Athanas 39 downloads
- The Gift Bearer Charles L. Fontenay 39 downloads
- Big Stupe Charles V. De Vet 39 downloads
- Routine for a Hornet Don Berry 39 downloads
- The Sword Frank Quattrocchi 38 downloads
- Growing up on Big Muddy Charles V. De Vet 38 downloads
- The Gravity Business James E. Gunn 38 downloads
- The Ambassadors From Venus Kendell Foster Crossen 38 downloads
- The Klygha H. B. Fyfe 38 downloads
- The Invaders Murray Leinster 38 downloads
- Lunar Station Harl Vincent 38 downloads
- Message From Mars Clifford D. Simak 38 downloads
- The Next Time We Die Robert Moore Williams 38 downloads
- The Weather on Mercury Joseph Samachson 38 downloads