- General Motors EMD locomotive history.
- WOODWARD HYDRAULIC GOVERNORS FOR ALL PRIME MOVERS.
- Woodward Governor Company serial number sales catalogue record.
- Woodward Governor Company serial number catalogue record.
- Vintage GM locomotive advertisements.
- Vintage GM locomotive advertisements.
- Vintage GM locomotive advertisements.
- Vintage GM locomotive advertisements.
- Vintage GM locomotive advertisements.
- 1941 ad
- The General Motors EMD FT series diesel locomotive that replaced the steam locomotive, circa 1930's.
- Hydromechanical fuel control for the diesel engine.
- WOODWARD GOVERNOR COMPANY AD 1946.
- An EMC Company diesel engine with a Woodwar SI type governor.
- Woodward energy control history from the archives.