- A Pierce Governor Company advertisement.
- 153
- 152
- Pierce Governor history page 151.
- A Turbomeca Marboré II gas turbine engine on display.
- Williams International WR19 series jet engine.
- A Williams International FJ44 series jet engine controlled by a Woodward fuel control system.
- Jet Engine for the Diamond D-JET.
- A Pierce Governor for a Mack Truck engine application.
- Pierce Governor Company. circa 1946.
- Brad's vintage machine shop manufacturing history project.
- WILLIAMS INTERNATIONAL GAS TURBINE ENGINE.
- WILLIAMS INTERNATIONAL GAS TURBINE ENGINE.
- Williams Research F107 series jet engine.
- A Tomahawk cutaway.