7. DETAIL OF UNITED-TOD TWIN-TANDEM STEAM ENGINE, SHOWING...
7. DETAIL OF UNITED-TOD TWIN-TANDEM STEAM ENGINE, SHOWING CYLINDER AND CROSS HEAD OF PISTON AT THE LOW PRESSURE SIDE OF ENGINE. - Republic Iron & Steel Company, Youngstown Works, Blooming Mill & Blooming Mill Engines, North of Poland Avenue, Youngstown, Mahoning County, OH
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