- The Allis-Chalmers Manufacturing Company's Industrial Progress magazine.
- Prime Mover Controls.
- Page 4.
- Page 3.
- Page 2. A vintage machine shop manufacturing history project.
- Page 1. A vintage machine shop manufacturing history project.
- INDUSTRIAL PROGRESS.
- Another vintage Woodward hydraulic water wheel governor application found.
- Allis-Chalmers Manufacturing Company's Steam Turbines and Generator history.
- A vintage machine shop manufacturing history project showing a Woodward governor.
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