Date: | 03 28 1929 |
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Description: | Elevated view from the south east of men constructing the concrete forms for the roof of the addition to the University of Wisconsin-Madison hydraulics lab... |
Date: | 1960 |
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Description: | Slightly elevated view of three men working with an experimental crawler tractor indoors. Caption reads: "Experimental Crawler Tractor Equipped with a Turb... |
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