- View from the west bank of the Wisconsin River showing progress on the power dam 1913.
- Two 150 hourse-power boilers 1918.
- 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.
- The Mill City hydro dam.
- The Mill City hydro dam.
- The Mill City hydro dam.
- The hydro turbine generators inside the Mill City power house.
- The completed Prairie du Sac Wisconsin power house, circa 1925.
- Sections of turbines inside the power house at the Prairie du Sac dam in 1914.
- Praire du Sac, Wisconsin in the 1870's.
- Praire du Sac hydro-electric power house project looking through the lock walls in 1913.