Here's a retro brochure for Rock City. Above is either the front/back, or the back/front.
This page of the brochure touts the Rock City Restaurant - "The Restaurant Built Around a Rock." I'm not sure if this restaurant is still operating. If anyone reading this knows if this restaurant is still in business please leave a comment.
Above is the exact same brochure, but with a different type face for "Rock City." Nothing that interesting, just being a completest.