- Woodward Governor Company's newest revision from 1981.
- Revision to the G. Forrest Drake document on the theory of governor operation of prime movers.
- Revision on the general theory of prime mover speed control.
- Fundamentals of speed governing history.
- THE FIRST WOODWARD COMPANY DOCUMENT PUBLISHED ON THE THEORY OF GOVERNOR SPEED CONTROL.
- Woodward... At the Heart of the Energy Control System Since 1870.
- Woodwardology on the world wide web.
- Woodward's most powerful speed governing control system. History in the making!