I recall a place called Millbrook Village just off of the old mine road. I was there a few years ago and it had some nice photo potential. Here is a link:
It has a mill with an external wheel and various old buildings.
It was early fall when I was there and the mosquitoes were a nuisance - I don't know how they would be this time of year, so be aware.
I hope you and Robert had a good time checking out Mount Holly locations.