- 3
- SAMSON WATER TURBINE PAMPHLET "P".
- 1
- JAMES LEFFEL & COMPANY'S ILLUSTRATED CATALOGUE HISTORY.
- James Leffel & Company history saved one page at a time.
- The Volcan Street Hydo Plant Property Location.
- The Volcan Street Hydo Plant Property Location.
- The Volcan Street Hydo Plant Property Location.
- The Volcan Street Hydo Plant Property Location.
- The Volcan Street Hydo Plant Property Location.
- The Volcan Street Hydo Plant History.
- The Volcan Street Hydo Plant History.
- The Volcan Street Hydo Plant showing the James Leffel turbine water wheel.
- The Volcan Street Hydo Plant showing the original James Leffel turbine water wheel.
- The Volcan Street Hydo Plant History.