- AMERICAN BOSCH
- SERVICE
- AMERICAN BOSCH COMPANY
- Brad's vintage machine shop manufacturing history project.
- The Roper Company.
- The Roper Company.
- Control For Small Water Turbines.
- Woodward Governor UG type hydro conrtol article
- Woodward Governor UG type conrtol article. 4
- Woodward Governor UG type conrtol article. 1
- Woodward Governor UG type conrtol article. 3