Date: | 1916 |
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Description: | In 1916, it was estimated that 15,000 Indian mounds had formerly existed in Wisconsin. In the early 20th century, the Wisconsin Archaeological Society surv... |
Date: | 1939 |
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Description: | This illustrated map shows counties, highways, rivers, roads, present and proposed state parks and forests, proposed state parkways, proposed state monumen... |
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