- Woodward series PGE governor history. 2.
- Woodward series PGE diesel engine governor history.
- Woodward Prime Times October 1986.
- Woodward Prime Times March 1987.
- Woodward Prime Times March 1987, page 2.
- WOODWARD PRIME TIMES 1991.
- WOODWARD PRIME TIMES 1991.
- WOODWARD PG RAILROAD DIESEL ENGINE GOVERNOR.
- WOODWARD PG RAILROAD DIESEL ENGINE GOVERNOR 5
- WOODWARD PG RAILROAD DIESEL ENGINE GOVERNOR 4
- WOODWARD PG RAILROAD DIESEL ENGINE GOVERNOR 3
- WOODWARD PG RAILROAD DIESEL ENGINE GOVERNOR 2
- WOODWARD PG LOCOMOTIVE GOVERNOR.
- WOODWARD HYDRAULIC PG GOVERNOR FOR LOCOMOTIVE ENGINES.
- WOODWARD ELECTRO-HYDRAULIC SI GOVERNOR