S. Petersen's Field Guide to Cthulhu Monsters: A Field Observer's Handbook of Preternatural Entities (Chaosium 5105)

With its clear visuals and hard-won information, this guide has saved my bacon on more than one occasion!
Ernest P. Wilderbeast, Visiting Professor of Preternatural Studies Miskatonic University
Weird shapes in the park? Odd rumbling noises in the basement? A lurking dread in the kitchen?
Bad dreams involving strange adventures and bizarre creatures?
Identifying the lurking horrors of the Cthulhu Mythos is never an easy task, so researchers need all the help they can get don t leave home without the Field Guide!
An essential spotter s guide for the budding and experienced preternaturalist.
Accurate and complete
53 Lovecraftian creatures categorized and detailed
Full color illustrations
Size comparison charts
Habitat, distribution, and life cycle notes
How to distinguish similar-seeming entities
Observer warnings
Bibliography and recommended reading list
Illustrations and descriptions from the Cthulhu Mythos and Dream Cycle based upon the creations of H.P. Lovecraft.