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Filter: Year of 1800-1899
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| Date: | 1823 |
|---|---|
| Description: | In 1823 U.S. Army major Stephen H. Long led an expedition of scientific, trade, and military investigation up the Mississippi River and the Red River of th... |
| Date: | 1880 |
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| Description: | Elevated view of the University of Wisconsin-Madison Washburn Observatory. Hill, trees and fields are in the background. A man is standing near a small obs... |
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