Books about Human-alien encounters -- Fiction (sorted by popularity)
- Mind Worms Moses Schere 56 downloads
- The Moon Maid Edgar Rice Burroughs 55 downloads
- The Madcap Metalloids Verne Athanas 55 downloads
- The thought-feeders R. R. Winterbotham 55 downloads
- The Thing in the Truck Stephen Marlowe 55 downloads
- Treasure of Triton Charles A. Baker 55 downloads
- The Scandalized Martians Arnold Marmor 55 downloads
- The Gift Bearer Charles L. Fontenay 55 downloads
- Prodigal Weapon Bill Garson 55 downloads
- The miniature menace Frank Belknap Long 55 downloads
- The Way Back Sam Moskowitz 54 downloads
- The Pacifists Charles E. Fritch 54 downloads
- The Brain Sinner Alan Edward Nourse 54 downloads
- Master Race Richard Ashby 54 downloads
- A world to die for Sam Carson 54 downloads
- Action on Azura Robertson Osborne 54 downloads
- Beach Scene Marshall King 53 downloads
- Combatman John Massie Davis 53 downloads
- The Enormous Word William Oberfield 53 downloads
- Open Invitation H. B. Fyfe 53 downloads
- The Unwilling Professor Arthur Porges 53 downloads
- As It Was Paul L. Payne 53 downloads
- The Monster That Threatened the Universe R. R. Winterbotham 53 downloads
- Fine Feathers George O. Smith 52 downloads
- The Mercurian Frank Belknap Long 52 downloads