I got it Homer in the hay loft was the guy who was blamed for technical problems.
Cannonball McCoy, and Xavier T. Willard was Willy, (Danny Williams.)
The moved the Mystery Mine down to the fairgrounds and you could get these tokens for visiting. It was WKY Booth and OPUBCO.
http://users.pullman.com/fjstevens/tokens/pix/6767.JPG