- Woodward Governor Company's operating manual on Woodward oil pressure relay valve governors.
- Woodward Governor Company's governor serial number catalogue page from 1937.
- Woodward Governor Company advertisement history.
- Vintage machine shop manufacturing history project.
- Vintage machine shop manufacturing history project.
- Vintage machine shop manufacturing history project.
- Vintage machine shop manufacturing history project.
- Vintage machine shop manufacturing history project.
- The Woodward Governor Company's Hydro Division in Stevens Point, Wisconsin. Circa 1986.
- The Woodward Governor Company's Hydro Division in Stevens Point, Wisconsin.
- The Woodward Governor Company's Hydro Division in Stevens Point, Wisconsin.
- The Woodward Governor Company's Hydro Division in Stevens Point, Wisconsin.
- The Woodward Governor Company's diesel engine governor cutaway unit.
- The newest vintage governor added to the oldwoodward.com prime mover control collection in August 2020.
- The first Woodward Governor Company diesel engine governor operating manual from 1938.