S. Petersen’s Field Guide to Cthulhu Monsters (1988) July 7, 2017May 19, 2024 by Stu HorvathCategories PostCall of Cthulhu, Chaosium, Field Guide to Cthulhu Monsters, monstersLeave a Comment on S. Petersen’s Field Guide to Cthulhu Monsters (1988) Less a game supplement, more a showcase for Tom Sullivan’s monster paintings. I am not complaining.