Sandy Petersen
Books
Call of Cthulhu
1992
ISBN 9780933635869
Into the Troll Realms
1982
ISBN 9780911605785
Terror Australis: Call of Cthulhu in the Land Down Under
2019
ISBN 9781568824154- No cover
Miskatonic U. Graduate Kit
1987
ISBN 9780933635371 - No cover
Sandy Petersens Cthulhu Mythos - 5E
2019
ISBN 9783963312366 
Petersen's field guide to Cthulhu monsters
1988
ISBN 9780933635487
Petersen's field guide
1989
ISBN 9780933635531
Shadows of Yog-Sothoth
2004
ISBN 9781568821740
S. Petersen's Field Guide to Lovecraftian Horrors
2016
ISBN 9781568820835
Griffin Mountain
1981
- No cover
Fragments of Fear
1985
ISBN 9780933635234 - No cover
Borderlands