- 1919
- A run of the river small hydro-electric power plant from 1915.
- A vintage Lombard water wheel governor in a very old hydro plant.
- General Electric Company ad from 1919.
- Mechanicville Hydroelectric Plant
- THE LOMBARD GOVERNOR COMPANY, CIRCA 1919.
- The Pelton Water Wheel Company history, circa 1919.
- Westinghouse ad from 1919.
- WESTINGHOUSE COMPANY AD, CIRCA 1919.
- Westinghouse Company ad, circa 1919.
- Westinghouse Company ad, circa 1919.
- Westinghouse Machine Company, circa 1913.
- Westinghouse Machine Company, circa 1919 ad.