[Nick_K]

Ah, I'd forgotten about the festival! I was trying to think of my favourites but I haven't had a chance to read them for years now... That story is creepy!

I've read the books Teraswaerto recommends and I belive that they cover most if not all of Lovecraft's prose.
Lovecraft encouraged other writers to make use of his 'Cthulhu mythos' as a setting for stories. There is lots of stuff set in Lovecraft's universe that was written by other authors. I don't know whether these have provided inspiration for any elements in Dominions.

There's lot's of non-Lovecraft Cthulhu-mythos stuff that I haven't read. The main one that I have read is the fantasy masterworks series edition of the works of Clark Ashton-Smith. This includes several stories that are clearly set in the Cthulhu mythos and actually introduces some entities that Lovecraft later mentioned in his work. Clark Ashton-Smith's work has more of a fantasy rather than a horror feel to it. I like both genres and I heartily recommend both authors.

As for Lovecraft's work, some of his longer stories are quite obvious influences on Dominions. In particular I'd recommend 'The call of Cthulhu' and 'The shadow over Innsmouth'.
I actually found shorter works like 'The festival', 'The temple' and 'The rats in the walls' to be scarier but the longer ones are just as enjoyable.