- Aircraft hydromechanical fuel control history data courtesy of the Woodward Company.
- Elmer Woodward's first oil pressure water wheel governor operating manual, circa 1911.
- Woodward Gate Shaft Type Governors. Page 8.
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- Woodward Gate Shaft Type Governors. Page 7.
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- Woodward Gate Shaft Type Governors. Page 6.
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- Woodward Gate Shaft Type Governors. Page 5.
- 5
- Woodward Gate Shaft Type Governors. Page 4.
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- Woodward Gate Shaft Type Governors. Page 3.
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- Woodward Gate Shaft Type Governors. Page 2.