- Patent model picture 5.
- Patent model picture 6.
- Patent model picture 8.
- Patent model picture 9.
- Patent model picture 10.
- The Saga of the Woodward patent model in pictures, circa January 12, 2018.
- WATER WHEEL GOVERNOR HISTORY.
- SCIENCE ABSTRACTS, CIRCA 1908.
- SCIENCE ABSTRACTS, CIRCA 1908.
- A WOODWARD FRICTION WATER WHEEL GOVERNOR THEORY OF OPERATION ARTICLE, CIRCA 1903.
- AMERICAN ELECTRICIAN ARTICLE FROM 1903. WE LOVE HISTORY!
- WOODWARD FRICTION WATER WHEEL GOVERNOR FROM PATENT NUMBER 103,813.