CoC - Cthulhu-Fu
Martial Arts in Call of Cthulhu
MtAs - Traditionbook
Cult of Ecstasy (2001)
Star Trek: Corp of Engineers - 059 - Blackout
Phaedra M. Weldon
Star Trek: Corp of Engineers (59)
Berlin Citybook
Torg
Tome and Blood: A Guidebook to Wizards and Sorcerers
Bruce R. Cordell and Skip Williams