- Leffel hydraulic turbines since 1862
- PMC 8-1986
- SHOP ORDER H1878 1938 001
- Specs for Three Rivers Mich Water Works 8
- Speed Droop from the Prime Mover Control conference in 1970 004
- Woodward Governor for a Smith Wind Turbine
- Lake Lynn Hydro plant 6
- September 13 1916
- KERN CO HYDRO CALIFORNIA 3
- LAKE LYNE
- St Francis dam in California Early Woodward actuator governors Ca 1920 s
- The Woodward Governor Company's Hydro Market before selling out to the General Electric Company.
- The turbine water wheel governor display.
- The Granite Creek Power Project Blueprint, circa 1927.
- MARSEILLIES HYDRO ILL POWER CO LA SALLE COUNTY ILL