If you're looking for the PDF, I have some bad news:
H.R. Giger did design work on a publication called "The Necronomicon" which is related to H.P. Lovecraft's works. hr giger 39s necronomicon pdf verified
By H.R. Giger.
Here's what I could find:
The Necronomicon is a fictional book of dark knowledge in H.P. Lovecraft's Cthulhu Mythos. If you're looking for the PDF, I have some bad news: H
A fascinating topic!