Home / HISTORICAL WATER POWER ENGINEERING. / A few Water Wheel Governor and Turbine Water Wheel Manufacturers from the U.S.A. / THE JAMES LEFFEL & COMPANY HISTORY PROJECT. / DOUBLE TURBINE WATER WHEEL CATALOGUE. /
JAMES LEFFEL LETTERHEAD, CIRCA 1944.
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- Sunday 6 August 2017
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- Friday 23 October 2020
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