>>40940365
There are at least three different versions of that map. This one is the most detailed that I've seen yet, but it's missing a couple areas that the one you posted has. Awhile back I found the original upload of it. It was a large file for an image, over 30MB iirc. I worked with it for awhile in GIMP and got it down to what you see here. It's the only format, resolution, and size I could settle on that this site would let me upload while still keeping enough detail to read the smallest text.
Note the legend in the bottom-right corner.