Matt, You are correct that Gene's son was at the convention. If you have a convention program, turn to page 43 -- table 60.
You'll find the contact info there.

If you don't have a program, send me an email for the info.
I'm reluctant to publish the info here on a public forum, out of respect for his privacy, but will give it to you as a fellow club member.

Also, as Rich F. suggested, Gene was quite a character and probably a good HOF candidate. His exuberance in chip collecting was (still is) hard to match.