Jeff Sale
I collaborated on this image with Steve Oberlin*. We did this way back in the summer of 1976 on the dining room wall of the Beta Mu chapter of Kappa Sigma at the University of Minnesota, Minneapolis (1125 5th St. SE, if you want to see if it's still there). Steve did the buildings and people, and I did the landscape, sky, and trim. Somewhere in there is hidden the greek symbols Kappa and Sigma. If the mural is still there, perhaps they still require the pledges to find it during Hell Week. Sorry, no hints, brothers.
*I believe Steve Oberlin went on to design the T3D (and possibly even the T3E) supercomputer as a senior scientist with Cray. For a while he was CEO of Unlimited Scale, Inc. (http://www.unlimitedscale.com/). Good job, Steve! Now he's with Cassatt Corp..