Tom Sullivan has written at least 6 books. Their most popular book is S. Petersen's Field Guide to Cthulhu Monsters: A Field Observer's Handbook of Preternatural Entities with 3 saves with an average rating of -⭐.
Series
1 primary book41 released booksAuthored 0% of series
Call of Cthulhu RPG is a 41-book series with 41 released primary work first released in 1981 with contributions by Keith Herber, William Deitze, and Sandy Petersen.