- Madison Wisconsin history.
- Brad's Woodward Prime Mover Control History Project.
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- Brad's Woodward Prime Mover Control History Project.
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- Taunton Machine Shop and Gear Works.
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- The Governing of Steam Turbines.
- The Westinghouse-Parsons Steam Turbine.
- A 1960's Davey Compressor Company's pneumatic engine governor.
- WGC PMC JUNE 1990
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