- Woodward Governor Company advertisement history.
- A Billet Sigma fuel injection pump.
- A Scheid diesel injection fuel pump.
- Woodward Governor Company advertisement history.
- Marquette Hydraulic Governor History.
- A Deutz Diesel injection fuel pump and governor unit.
- An EMD diesel engine with a Marquette governor application.
- Marquette Hydraulic Governor Operation Manual.
- Woodward Governor Company advertisement history.
- Woodward Governor Company advertisement history.
- Woodward Governor Company advertisement history.
- A Bosch Duramax fuel Injection pump and governor unit.
- Woodward Governor Company advertisement history.
- Gillespie's Rotary Hydraulic Governor History.
- American Bosch Company's Fuel Control Equipment History.