I go through Union fairly often. In the summer the back roads are better for travel than the main roads and my route south takes me through Union. Beautiful area! I went to the fair once back in the 70's.
What I haven't done yet is get there to photograph Clary Hill when the blueberry bushes are red. I've seen some amazing shots though.

Be well!

-Kenn-

Just FYI: If you know where Union is, my father spent his early childhood there. We used to vacation in Union at the time of the annual fair when I was a kid.