- An EMD diesel engine with a Marquette governor application.
- Marquette Hydraulic Governor History.
- Marquette Hydraulic Governor Operation Manual.
- Woodward Governor Company advertisement history.
- Woodward Governor Company advertisement history.
- Woodward Governor Company advertisement history.
- Woodward Governor Company advertisement history.
- Woodward Governor Company advertisement history.
- Woodward Governor Company advertisement history.
- American Bosch Company's Fuel Control Equipment History.
- A World War ll era employee name badge.
- The Curtiss Proportional Electric Governor Control System Manual
- Gillespie's Rotary Hydraulic Governor History.
- A Billet Sigma fuel injection pump.
- A Scheid diesel injection fuel pump.