Art,
I've never been to Columbus. I've been to Iowa gas several times. The last time being 3 or 4 years ago. If you can't be there the first day of the show (or a day or two BEFORE the show) there's no sense going. My guess is Columbus is getting to be the same way. If I could go to one of those shows I think it would be Columbus. Everything I've heard about that show is positive.
Bob
Wanted: Gas pump globes:Sinclair & affiliates, IL companies. Ripple bodies. Anything Sinclair, Stoll, Pierce, 4 Bros.
http://www.lastgas15.com/