Lovecraftian Horror made by other than Lovecraft

I've recently read lots of stories made by Lovecraft and I cant get enough of it. So I also read The Fisherman by John Langhan. That was really great and now I want even more. Can you guys recommend other Lovecraftian horrors books (preferred in the form of short story, novels are fine too) made by other than HP Lovecraft himself.

Edit: Thank you all for who suggested. I've got more than enough suggestions.