The original version of Gamma World came with an unlabelled version of this map. While poking around the web one day, I found Scott's Gamma World Pages which had a poor quality scan of a magazine that had labels. I decided to improve it by scanning in my original map and updating it. Photoshop and a fair amount of time resulted in this.
One day I was bored, so I decided to colour one of the black and white pictures that came in the Gamma World module "Famine In Far-Go"