- Irl C. Martin's Notes On The Old Woodward Governor Company's Water Wheel Governor Numbering System.
- Irl C. Martin's Notes On The Old Woodward Governor Company's Water Wheel Governor Numbering System.
- WOODWARD GOVERNOR COMPANY WATER WHEEL GOVERNOR DATA SHEET INDEX.
- A Woodward hydrauilc HR series water wheel governor.
- Circa 1925.
- Looking back at some Woodward Governor Company water power control history over the years.
- Looking back at some Woodward Governor Company water power control history over the years.
- Cal Covert and his wife at a Woodward open house in 1952.