Union - is along the east side of the Middle Branch of Sugar Creek near Cooperstown in Jackson Township. It was built in 1850 by Dr. Williams and Jacob Geist. They sold it to Hughes and Bevin, who closed it down in 1854(s&t). The round stack is in poor condition, but the openings are intact. It stands in a very dense thicket of brush. The mill race, furnace roads, and many slag piles can be discerned. (P)(V)(rp-1977, is-2004).
From the village of Cooperstown take PA427 north for 1.2 miles. Turn right on Creek Road (T595), cross the bridge over the Middle Branch of Sugar Creek. ¼ mile past the bridge turn left on Furnace Road (also shown as White Road by Penndot County map -T384). Proceed exactly 0.18 miles on Furnace Road. The furnace is to the left between the road and the creek. It is difficult to see because of heavy underbrush, therefore the exact location on Furnace Road is important. (1977).
GPS coordinates 41º 30.977'N - 79º 51.533'W (is-2004)
