Tom & Sue Nelson at their table. Tom Nelson always amazes me on his research, first with Ohio Brass a while ago, then the Cadiz, Ohio Factory research a few years ago. Now he's into pony insulators, I can't wait to see what he'll come up with! The 14th Annual Allegheny Valley Insulator Show at the VFW Hall in Natrona Heights, PA on Saturday, April 5, 2014.