Deities and Demigods (2013) 1980, Don't forget 2 printings
Publisher: TSR
Systems: Advanced Dungeons and Dragons
Authors: James M Ward
Contents
| Title | Pages | Author | System | |
|---|---|---|---|---|
 Cthulhu Mythos | 43-48 | James M Ward | Advanced Dungeons and Dragons |
Links: 
RPG Geek, 
RPG.net, 
Yog-Sothoth