- WOODWARD VR gateshaft Governor OFFSET CONTROL STANDARD BEFORE 1920
- VOITH HYDRO
- Vintage Hydroelectric Power Plant history.
- Vintage Hydroelectric Power Plant history.
- The Upper Peninsula of Michigan. An inventory of historic engineering and industrial sites.
- The Upper Peninsula of Michigan. An inventory of historic engineering and industrial sites.
- The Upper Peninsula of Michigan. An inventory of historic engineering and industrial sites.
- The Upper Peninsula of Michigan. An inventory of historic engineering and industrial sites.
- THE UNIVERSITY OF MICHIGAN, FOUNDED IN 1817.
- THE ROSS DAM.
- The Pelton Water Wheel Company history, circa 1919.
- THE LOMBARD GOVERNOR COMPANY, CIRCA 1919.
- The first Woodward oil pressure hydraulic water wheel governor from patent number 1,106,434.
- THE ELECTRIC LIGHT SYSTEM AT APPLETON, WISCONSIN.
- ROSS DAM HISTORY.