- PMC MARCH 1988 002
- Pelton type water turbine
- WOODWARD GATESHAFT GOVERNORS MANUAL 14000E
- 2
- Georgetown Steam Plant Seattle WA 3
- Great Northern Paper Co Mattaceunik Station Millinocket Maine Gateshaft Governor 3
- Great Northern Paper Co Mattaceunik Station Millinocket Maine PMG unit
- HUNTINGDON FURNACE GRIST MILL PA FORD TRUCK CA 1910
- HURRICANE SHOALS POWER DEVELOPMENT 1926
- SHOP ORDER H1878 1938 010
- Swan Falls in 1910 5
- THE FITZ WATER WHEEL COMPANY 1931
- SPEED REGULATION OF HIGH HEAD WATER WHEELS.
- GRUBER WAGON WORKS PA CA 4
- Logan Utha hydro plant