- A vintage machine shop manufacturing history project about the hydro-electric power plant Industry.
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- Types of Hydropower Turbines.
- 37
- 2
- 4
- MYERS, A., FIRM, SAN FRANCISCO, CALIF. ILLUSTRATED DESCRIPTIVE CATALOG.
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- Patented April 1, 1873.
- 13
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- A James Leffel Water Wheel Company letter from 1870.
- An A. W. Woodward Company letter from 1887.
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