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- A Woodward water wheel governor mechanical timer.
- THE LOMBARD GOVERNOR COMPANY, CIRCA 1919.
- 70
- GEN2 045
- Inside the hydro-electric power house.
- A 1944 James Leffel Water Wheel blueprint drawing showing a Woodward size D governor.
- Governor for the World Radio Missionary in Ecuador. Price quote.
- The Pelton Water Wheel Company history, circa 1919.
- The Granite Creek Power Project letter, circa 1928. Page 2.
- The Granite Creek Power Project letter, circa 1928.
- SPEED REGULATION OF HIGH HEAD WATER WHEELS.
- How does a Woodward Oil Pressure water wheel governor work?
- A run of the river small hydro-electric power plant from 1915.
- MECHANICAL DESIGN OF HYDRO ELECTRIC POWER PLANTS.
- The Granite Creek Power Project Blueprint Page 2.