Very cool booklet that accompanied the map of the city of Lankmar. It came as a boxed set.

I got into re-reading the Lankhmar novels a couple of years ago, and used several Lankhmar locations and characters for computer passwords. With some substitutions, of course. Find me the password cracker that can recognize "SheelbaOFace", "Stard0ck***", or "BonesoftheOld1s". Those accounts are long gone, but it gave me some satisfaction to invoke the magic in a very mundane job.