- Dual Control WOODWARD TYPE SGT GOVERNOR.
- Dual Control with the new Woodward SGS Governor.
- DSM (Digital Speed Matching) Synchronizer manual number 85101A.
- Drive gear end.
- Drive gear end.
- Double-acting gas engine history. Page 3.
- Double-acting gas engine history. Page 2.
- Double-acting gas engine history.
- DOUBLE SEAL RING COMPANY HISTORY.
- Documenting Woodward governor history one page at a time.
- Documenting Woodward electronic control theory of operation.
- Documenting Woodward digital control history.
- Documenting the Woodward governor evolution one page at a time.
- Documenting the history of the Art and Science of Governing.
- Documenting the history of the Art and Science of Governing.