Date: | 1907 |
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Description: | Text from front reads: "Summer House–Conference Point, Williams Bay, Wis." In the center is an oval-framed group portrait of 16 men and five women pose in ... |
Date: | 1907 |
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Description: | Text on front reads: "Yerkes Observatory of the University of Chicago at Williams Bay, Wisconsin." Founded in 1892 by astronomer George Ellery Hale and fin... |
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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