- Georgetown Steam Plant Seattle WA 3
- Leffel Company data from 1869.
- Pelton type water turbine
- SHOP ORDER H1878 1938 010
- Swan Falls in 1910 5
- WOODWARD GATESHAFT GOVERNORS MANUAL 14000E
- Kern County Number 1 Hydro-electric Power Station History.
- 2
- 13
- FAIRMOUNT WATERWORKS PA 8
- FERRIS STATE COLLEGE MICHIGAN 1968 001
- Johnson Engineering
- SHOP ORDER H1354 Ca 1924
- WOODWARD TOP PERFORMANCE THROUGH CONVERSION MANUAL 09026A 005
- GRUBER WAGON WORKS PA CA 3