- Woodward CSSA propeller governor manual 33194.
- A governor is...
- Governor definition.
- What is a governor?
- Woodward Governor Company's Power Control pamplet from 1911
- JAMES LEFFEL LETTERHEAD, CIRCA 1944.
- Ye old Woodward mill and museum in Stevens Point Wisconsin.
- Bulletin number 25004H.
- Old Mill News.
- The Woodward Mill in Stevens Point, Wisconsin.
- Woodward Governor Company's shop order #1845, circa 1909.
- SG series governor bulletin 04001.
- Oldwoodward.com.. helping to keep the history alive in the 21st Century!
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- Woodward's small propeller governor type PW-34 on display