- Woodward governor history.
- Woodward Governor Company's operating manual on Woodward oil pressure relay valve governors.
- Woodward Governor Company's governor serial number catalogue page from 1937.
- Woodward Governor Company advertisement history.
- WHY PIERCE GOVERNORS ARE SUPERIOR.
- WHY PIERCE GOVERNORS ARE SUPERIOR.
- WATER OR HYDRAULIC MOTORS.
- WATER OR HYDRAULIC MOTORS
- Wall of governors.
- Vintage machine shop manufacturing history project.
- Vintage machine shop manufacturing history project.
- Vintage machine shop manufacturing history project.
- Vintage machine shop manufacturing history project.
- Vintage machine shop manufacturing history project.
- Two great Aerospace quotes: