Perfect inspiration for Call of Cthulhu and/or Carcosa dark tomes.
MrZarono
http://mrzarono.deviantart.com/
Though do keep in mind that some of the art there will be NOT SAFE FOR WORK. Though that probably goes for most of DeviantART anyways.
Just had to share a few of his images. Check out his stuff!
Rlyeh Text
http://mrzarono.deviantart.com/gallery/?offset=48#/d4p5fj7
Necromancy
http://mrzarono.deviantart.com/gallery/?offset=48#/d4o2lm3
