The Smoke Ring
Larry Niven
The Smoke Ring (2)
Serverland
Josefine Rieks
Betrayer of Worlds
Larry Niven & Edward M. Lerner
Fleet of Worlds (4)
Flatlander
The Folklore of Discworld
Terry Pratchett & Jacqueline Simpson
An H.P. Lovecraft Encyclopedia
S. T. Joshi & David E. Schultz
The Science of Discworld
Terry Pratchett & Ian Stewart & Jack Cohen
The Wit and Wisdom of Discworld
Terry Pratchett