"It's not a bad idea to call this Cthulhuism & Yog-Sothothery of mine "The Mythology of Hastur"—although it was really from Machen & Dunsany & others, rather than through the Bierce-Chambers line, that I picked up my gradually developing hash of theogony—or daimonogony. Come to think of it, I guess I sling this stuff more as Chambers does than as Machen & Dunsany do—though I had written a good deal of it before I ever suspected that Chambers ever wrote a weird story!"
January 1, 1970
https://en.wikiquote.org/wiki/H._P._Lovecraft