- The Woodward size D governor described in the letters.
- Woodward size D governor serial number 2761, made in 1915.
- Woodward Governor Company letterhead.
- Woodward size D governor for the McCord Company, circa 1917.
- The Trump Manufacturing Company letter, circa 1913.
- The Granite Creek Power Project Blueprint Page 2.
- The Granite Creek Power Project Blueprint, circa 1927.
- The Granite Creek Power Project letter, circa 1928. Page 2.
- The Granite Creek Power Project letter, circa 1928.
- Governor for the World Radio Missionary in Ecuador. Price quote.
- Governor for the World Radio Missionary in Ecuador, circa 1980.