I made a call to Bozarth Chevrolet a while back, not much help. From what I read on line, Central Chevrolet was owned by Charles Wilsea and Les Shellabarger. Shellabarger must have bought out Wilsea, and built a new dealership in 1968? Found some dealer #, zone # information for Shellabarger Chevrolet on a Chevelle website. I have had some e-mail correspondence with a couple of newspapers in Grand Junction, and they are looking through their archives for articles, pictures, etc. The search goes on.
This is like looking for that one last part that you need for your car!!!!