- PATENT NUMBER 2,039,507
- THE WOODWARD TYPE IC DIESEL ENGINE GOVERNOR HISTORY.
- WOODWARD DIESEL ENGINE GOVERNOR HISTORY.
- uva.x002308968-seq 447
- Woodward controls on the QM2. Page 3.
- WOODWARD GOVERNOR PAGE 3 BULLETIN NUMBER 25012.
- WOODWARD GOVERNOR PAGE 2 BULLETIN NUMBER 25012.
- WOODWARD GOVERNOR BULLETIN NUMBER 25011A.
- Woodward controls on the QM2. Page 2.
- Woodward controls. Page 4.
- WOODWARD GOVERNOR BULLETIN NUMBER 25012.
- Woodward... At the Heart of the Energy Control System Since 1870.
- Woodwardology on the world wide web.
- Elmer Woodward's first diesel engine governor from patent number 2,039,507.