- WARNING
- WOODWARD PSG GOVERNOR MANUAL 37013C
- Woodward PSG governor bulletin 37002.
- An early application of the Woodward PSG governor, circa 1944.
- A Woodward PSG governor in the oldwoodward.com collection, circa 2008.
- WOODWARD HYDRAULIC GOVERNOR HISTORY.
- WOODWARD HYDRAULIC GOVERNOR HISTORY.
- WOODWARD HYDRAULIC GOVERNORS ADVERTISEMENT.
- Instructions for Woodward Hydraulic Governors, circa 1942.
- A Woodward Company history painting of their governor applications.
- Elmer E. Woodward
- Original picture of a Woodward Oil Pressure(hydraulic) governor system, circa 1918.
- An early application of a Woodward hydraulic turbine water wheel governor system, circa 1917.
- The new Woodward water wheel governor system, circa 1912.
- A new type of Woodward water wheel governor, circa 1912.