- LEFFEL HYDRAULIC TURBINES.
- THE JAMES LEFFEL AND COMPANY ADVERTISEMENT.
- LEFFEL QUALITY...
- Leffel Turbines...
- Leffel hydraulic turbines since 1862.
- Woodward and the James Leffel Company go way back in history.
- Woodward data processing flow chart. Show me the data!
- Woodward and the James Leffel Company go way back in history.
- Vintage advertisement with both Woodward and James Leffel Companies.
- SAMSON WATER TURBINE CATALOGUE.
- resolver
- Woodward catalogue M data.
- SPECIFICATIONS FOR SIZE D WATER WHEEL GOVERNOR.
- Catalogue for the vertical samson turbine installation, circa 11-13-1944.
- SAMSON TURBINE CATALOGUE.