Date: | 1898 |
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Description: | This map shows blocks, industrial buildings, and railroads in portions of Duluth and Superior, as well as harbor lines, areas improved, and proposed improv... |
Date: | 1873 |
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Description: | This blueprint map shows water depths by soundings and isolines. To the top left is Duluth, Minnesota. To the bottom right is Superior City, Wisconsin. The... |
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