Call of Cthulhu
The Thing at the Threshold
Dragon Magazine #375
Unknown
CoC - Miskatonic Repository
Ultima Thule
Carnage À Trois
Rick Gualtieri
Bill of the Dead (3)
Cthulhu Mythos Encyclopedia
Daniel Harms
Delta Green: Strange Authorities
John Scott Tynes
Delta Green: Denied to the Enemy
Detwiller, Dennis