DF: DDG: Cthulhu Mythos (Sources)

"Most of the creatures presented here were introduced by the earlier authors: Lovecraft, Derleth and Smith."

I'm wondering about:
A) author
B) story

Can you help me fill out this list ?


Cthulhu
Azathoth
Byakhee
Cthuga
Cthuga's Flame Creature
Deep Ones
Great Race
Hastur the Unspeakable
Ithaqua
Mi-Go
Nyarlathotep
Primordial One
Shoggoth
Shub-Niggurath
Yog-Sothoth
The Elder Sign
The Necronomicon