- September 19, 1919 letter.
- Mann Edge Tool Company letter, circa May 8, 1919.
- The James Leffel Company letter, circa March 10, 1919.
- Woodward blueprint for Man Edge Tool Company, circa 1918. 4.
- Woodward blueprint for Man Edge Tool Company, circa 1918. 3.
- Woodward blueprint for Man Edge Tool Company, circa 1918. 2.
- Woodward blueprint for Man Edge Tool Company, circa 1918.
- The James Leffel Company letter, circa November 13,1918.
- WOODWARD DRAWING. CIRCA MARCH 24,1919.
- A James Leffel & Company letter to the Woodward Governor Company in 1919.
- Woodward Shop Order 3444, circa March 26, 1919.
- Elmer Woodward adjusting and calibrating a governor.
- Woodward factory photo of the Compensating type Water Wheel Governor.
- The Elmer Woodward Compensating Water Wheel Governor.
- Letter to Woodward about the value of an obsolete governor, page 2.