- The Volcan Street Hydo Plant Property Location.
- The Volcan Street Hydo Plant Property Location.
- Amos Woodward letter to the James Leffel & Company, circa 1887.
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- The Volcan Street Hydo Plant Property Location.
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- A James Leffel & Company letter to Woodward, circa 1937.
- The Volcan Street Hydo Plant showing the James Leffel turbine water wheel.
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- The Volcan Street Hydo Plant History.
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