- Woodward... at the heart of the system since 1870.
- Woodward...world's oldest and largest manufacturer of prime mover controls.
- Model of the Woodward Governor factory at 658-660 Race Street in Rockford ill
- The Oldwoodward.com mission statement.
- More Woodward history found.
- ELMER ELLSSWORTH WOODWARD 1862-1940.
- A Woodward Company history painting of their governor applications.
- Instructions for Woodward Hydraulic Governors, circa 1942.
- WOODWARD HYDRAULIC GOVERNORS ADVERTISEMENT.
- WOODWARD HYDRAULIC GOVERNOR HISTORY.
- WOODWARD HYDRAULIC GOVERNOR HISTORY.
- A Woodward PSG governor in the oldwoodward.com collection, circa 2008.
- An early application of the Woodward PSG governor, circa 1944.
- Woodward PSG governor bulletin 37002.
- WOODWARD PSG GOVERNOR MANUAL 37013C