My high resolution super-sharp scan of that map is on the way.
I'll post it, of course, when I get it.
But first... voice sparkles with animation... this little teaser:
Coming soon, from Dave Sim, ca. 1983, a 3-part sorta-kinda "World without Cerebus" collection of original art pieces that just magically fell my way. That's probably more than enough background tips to clue some of you in.