I found a scan of the old TSR era Greyhawk map. It isn't a great scan, but it will let you see what I think our DM is looking at. At least I think it is the right one.
It was in fact quite challenging to find. I never did find it using Google, but Bing finally came through. I must have looked at 50+ before I got it. Still not as high res I would have liked, but at least with a little creative magnification I can find stuff on it.
Excellent map!! Greyhawk has always been my favorite setting, followed by the 'Known World' in the Moldvay version of Basic/Expert D&D (before they christened it Mystara and screwed it up with flying ships...).
Gee, ya think??? When we have an IC, I'll take that request under advisement.
I've found that most such links do better in the RG, because IC threads do eventually fill up and are replaced, while an RG thread has a much longer lifespan. But for the first IC, I generally duplicate links like this across IC, OOC, and RG.