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Aerial Lift Bridge: Steam Plant Construction, Duluth, Minnesota
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Aerial Lift Bridge: Steam Plant Construction, Duluth, Minnesota
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Aerial Lift Bridge: Steam Plant Construction, Unloading automobiles off a freighter at the harbor, Duluth, Minnesota
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Buildings being constructed near Leonidas Location, Minnesota
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Buildings being constructed near Leonidas Location, Minnesota
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Cold Spring Granite Company's first steel plant building during construction, Cold Spring, Minnesota
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1920
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1932
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Granite Industry and Trade
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University of Minnesota Duluth, Kathryn A. Martin Library, NEMHC Collections
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Iron Range Research Center
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Stearns History Museum
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