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- A first generation (pre-1920) Woodward hydraulic turbine water wheel governor advertisement in Electrical World magazine.
- A Great Western Power Company's Woodward type D Compensating Governor.
- A Hoover Dam history project.
- A Hoover Dam history project.
- A James Leffel Water Wheel blueprint number 43640, circa 1944.
- A James Leffel Water Wheel blueprint number 43640, circa 1944.
- A James Leffel Water Wheel blueprint number 43640, circa 1944.
- A James Leffel Water Wheel blueprint number 43640, circa 1944.
- A James Leffel Water Wheel blueprint number 43640, circa 1944.
- A machine shop manufacturing history project.
- A run of the river small hydro-electric power plant from 1915.
- A schematic drawing of a Woodward compensating type mechanical water wheel governor.
- A vintage Hydroelectric Power advertisement project.
- A vintage Lombard governor scrapped and replaced with a Woodward governor.
- A vintage Woodward Water Wheel governor advertisement printed on aluminum.