- Wisconsin Hydro history. Page 6.
- Wisconsin Hydro history. Page 5.
- Wisconsin Hydro history. Page 4.
- Wisconsin Hydro history. Page 3.
- Wisconsin Hydro history. Page 2.
- WGC PMC JANUARY 1989.
- WGC PMC CTL JANUARY 1989.
- View from the west bank of the Wisconsin River showing progress on the power dam 1913.
- Two 150 hourse-power boilers 1918.
- The Woodward Governor Company replaced and upgraded many vintage governors over the decades.
- The Prairie du Sac Hydro-electric power plant history, circa 1913.
- The Mill City hydro-electric power house.
- The Mill City hydro-electric power house.
- The Mill City hydro-electric power house.
- The Mill City hydro-electric power house in 1897.