- History of the shaft governor. Page 3.
- History of the shaft governor. Page 2.
- History of the shaft governor.
- THE NEW GOVERNORS OF NIAGARA FALLS. PAGE 2.
- THE NEW GOVERNORS OF NIAGARA FALLS.
- Faesch & Piccard mechanical governor system.
- Faesch & Piccard mechanical governor system.
- Woodward Prime Mover Control remembered, circa March 1995.
- The Sibey Journal of Mechanical Engineering, circa 1901.
- Scientific American Journal.
- The Sibey Journal of Engineering.
- Scientific American, circa July 23, 1859.
- Scientific American, circa July 2, 1859.
- Scientific American, circa July 2, 1859.
- Scientific American, circa March 1861.