- A newspaper article on the Jordan power plant rejuvenated, circa 2002.
- A light used inside to inspect the turbine unit for an annual inspection.
- A JAMES LEFFEL'S DOUBLE TURBINE WATER WHEEL ADVERTISEMENT.
- A James Leffel Water Wheel blueprint number 43640, circa 1944.
- A James Leffel Water Wheel blueprint number 43640, circa 1944.
- A James Leffel Water Wheel blueprint number 43640, circa 1944.
- A James Leffel Water Wheel blueprint number 43640, circa 1944.
- A James Leffel Water Wheel blueprint number 43640, circa 1944.
- A 1944 James Leffel Water Wheel blueprint drawing showing a Woodward size D governor.
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