I don’t see an expiration date on this magazine ad from the 80′s… kind of weird writing a check payable to NECRONOMICON but let’s just see what happens (found in Epic Illustrated no. 7). 

This is the Simon Necronomicon, isn’t it (Schlangekraft, Inc.)? I looked up the address, and it says it’s a surgical center. That sounds like subterfuge by cultists to me, though. Check the basement.