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Filter: Subject of surveying
| Date: | 1848 |
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| Description: | Map of Wisconsin and a portion of Minnesota showing the township surveys in progress in portions of the Saint Croix River region and in central Wisconsin a... |
| Date: | 1860 |
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| Description: | A survey map of Wisconsin, southeastern Minnesota, and northern Iowa, showing the status of surveys, rivers, and lakes. The map also shows the locations of... |
| Date: | 1918 |
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| Description: | Outdoor view of a U.S. Army Engineer topographer wearing skis while using a tripod stand to write. The engineer is standing next to a barbed wire obstacle ... |
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