- We love vintage patents!
- 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 completed Prairie du Sac Wisconsin power house, circa 1925.
- Souvenir Madison, Wisconsin.
- Souvenir Madison, Wisconsin.
- 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.
- Park Hotel.
- Nob Hill Resturant in Madison, Wisconsin.
- Men pouring concrete at the dam project, circa 1911.
- Main office at the power dam in 1912.
- Madison, Wisconsin postcard history.