- At the Head of the Class...
- Elmer Woodward's first aircraft engine governor at the Smithsonian.
- Elmer Woodward's aircraft propeller engine governor type PW-34.
- Elmer Woodward's hydraulic engine governor at the Smithsonian.
- Elmer Woodward's 1934 aircraft engine governor.
- Elmer Woodward patent number 2,204,640.
- How a Woodward Company jet engine governor works...
- Page 1.
- Page 2.