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- Woodward Hydraulic Water Wheel Governors. 2.
- W. F. & John Barnes Company Rockford, Illinois.
- Lucas Aerospace Company's jet engine fuel control cutaway display unit for the Rolls Royce SPEY 511 series engine.
- Prime Mover Control History Painting.
- WATER POWER ENGINEERING, CIRCA 1908.
- DIRECTIONS for Connecting and Operating VERTICAL MODEL GOVERNORS 4
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- 1098-1
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- Vintage Hydroelectric Power Plant history, circa 1920.
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- 32 029
- A-12
- AIRCRAFT CONTROLS GROUP 002
- MODERN HYDRAULIC GOVERNOR DESIGN 5