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| Date: | |
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| Description: | A sundial on a pedestal sits on Observatory Hill, overlooking trees, a rooftop, and part of Lake Mendota. |
| Date: | 1907 |
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| Description: | Text on front reads: "The 40-inch telescope of the University of Chicago Yerkes Observatory, Williams Bay, Wisconsin. The object-glass has a diameter of 40... |
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