- 1919
- Vintage Hydroelectric Power Plant history, circa 1920.
- 1925 view of the Prairie du Sac power plant
- A PELTON GOVERNOR AND TURBINE,CIRCA 1926.
- 1926 PELTON GOVERNOR AND TURBINE 1
- A PELTON GOVERNOR AND TURBINE, CIRCA 1926.
- 1926 PELTON GOVERNOR AND TURBINE
- A 1929 VIEW OF AN ALLIS-CHALMERS STEAM TURBINE COVER REMOVED 1
- 1929 VIEW OF ALLIS-CHALMERS STEAM TURBINE COVER REMOVED
- Woodward history from 1937.
- 1938
- 1946
- 1968 3
- 1968 2
- 1968