Date: | |
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Description: | Thunderbird petroglyphs carved on rock face at Twin Bluffs. |
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: | 11 03 1903 |
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Description: | A drawing of a group of burial mounds in Linden Valley. Text on back reads: "These mounds lie at the narrow mouth of Linden Valley on the east side of the ... |
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