Sandy Petersen

Call of Cthulhu Illustrated

2021

Infant and Toddler Development and Responsive Program Planning

2017

Call of Cthulhu

1989

Three Imposters

2024

Shadows of Yog-Sothoth

2004

Levelling

2000

White Wolf

1987

The Complete Dreamlands (Call of Cthulhu)

1996

Stormbringer Companion

1983

Sandy Petersen's Cthulhu Mythos (for Pathfinder 2e)

2021

Sailing on the Seas of Fate

1996

S. Petersen's Field Guide to Lovecraftian Horrors

2016

Petersen's field guide

1989

Petersen's field guide to Cthulhu monsters

1988

Petersen's Abominations

2018

Nightmares 1

2021

La Llamada de Cthulhu

2000

Into the Troll Realms

1988