- Ingersoll Milling Machine Company.
- GISHOLT MACHINE COMPANY, CIRCA 1924.
- GISHOLT MACHINE COMPANY.
- W. F. & John Barnes Company
- Ingersoll Milling Machine Company, Rockford, Ill.
- Marquette Hydraulic Governor History.
- 2
- BRAD'S AIRCRAFT PROPELLER PROJECT.
- 16
- A vintage engine with a Woodward SG governor application.
- 005-13mm-p7100-cummins-injection-pump
- A Bosch Duramax fuel Injection pump and governor unit.
- The Fairbanks-Morse Company's Woodward IC governor application.
- A Deutz Diesel injection fuel pump and governor unit.
- A Scheid diesel injection fuel pump.