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Filter: Categories of Wisconsin Historical Images
Filter: Subject of Canals
Filter: County of Douglas
| Date: | 1907 |
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| Description: | Postcard with two images. The top text reads: "Interstate Bridge, connecting Superior, Wis. and Duluth, Minn." The bottom text reads: "Superior Entry and S... |
| Date: | 06 14 1947 |
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| Description: | Text on front reads: "Opening of Navigation Season, First Giant Freighters Entering Ship Canal and Duluth-Superior Harbor." On reverse: "The navigation sea... |
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