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Creation date / All / February / 22
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- November 1958 Plant News.
- A Woodward Prime Mover Control Plant News History Project.
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- February 1970 Plant News.
- A Woodward Prime Mover Control Plant News History Project.
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- The Pierce Governor Company history.
- The Pierce Governor Company history.
- The Pierce Governor Company history.
- The Pierce Governor Company history.
- Elmer Woodward's new horizontal compensating water wheel governor, circa 1902.
- Elmer Woodward's horizontal compensating type F water wheel governor.