I'm sure Randy will have much to add here. But for now, here's the web page from the last GABFest in 2016.
In there is the address:
Wisconsin Automotive Museum Parking Lot 147 North Rural Street Hartford, WI
There also is a mention of Fox Lake - Home of the oldest GM Dealership in Wisconsin. Come visit them while you're here!
Just needed to include some of the cool graphics made for this event.
Really looking forward to hearing more from Randy. Hoping he'll have a #2 (or 3 or 4 ) to help him put this together. Plenty of lead time here!
~ Peggy M 1949 Chevrolet 3804 "Charlie" - The Stovebolt Flagship In the Gallery || In the Gallery Forum "I didn't see this one coming. I don't see much of anything coming. :-O"
) to help him put this together. Plenty of lead time here! 
