S. Petersen's Field Guide to Cthulhu Monsters: A Field Observer's Handbook of Preternatural Entities
| Publisher | Chaosium, Inc. |
| Concept by | Sandy Petersen |
| Artist | Tom Sullivan |
| Layout by/Layout Coordinator | Lynn Willis |
| Production | Lynn Willis |
| Format | Soft cover |
| Language | English |
| Location | Albany, CA |
| Copyright | 1988 |
| Pages / Font | 64 pages |
| ISBN 10 | 0-933635-48-6 |
| Catalog Number | Chaosium Publication 5105 |
Added by rotorschnee