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Description: | Interior view looking down from balcony of the Penn Light and Power Company, and what appear to be enormous generators or turbines. |
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Description: | A view of various machines arranged within the experimental mechanical laboratory at Louisiana State University. Caption reads: "Experimental Mechanical La... |
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Description: | Elevated view of Wilson Dam under construction, looking south. Three large cranes can be seen on the dam over the Tennessee River. Caption reads: "Wilson D... |
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