
Tom Sullivan's most popular book is S. Petersen's Field Guide to Cthulhu Monsters: A Field Observer's Handbook of Preternatural Entities with 3 saves and an average rating of -.
Series
1 primary book49 released booksAuthored 0% of series
Call of Cthulhu RPG is a 49-book series with 1 released primary work first released in 1981 with contributions by Keith Herber, William Deitze, and Sandy Petersen.