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Limestones and Marls of Wisconsin
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Geologic Map of Wisconsin Showing Locations From Which Samples of Limestone, Dolomite, Marl, Shale or Clay Were Analyzed [plate 6]
1924
Map: 15.5 in x 16.9 in, scale 1:1,000,000
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Mineral Land Classification, Showing Indications of Iron Formation in Parts of Ashland, Bayfield, Washburn, Sawyer, Price, Oneida, Forest, Rusk, Barron, and Chippewa Counties
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Map Showing Geology of Part of Northwestern Wisconsin Including Parts of Ashland, Bayfield, Washburn, Sawyer, Price, Oneida, Barron, Rusk, and Chippewa Counties [plate 1]
1915
Map: 20.7 in x 13.5 in, scale 1 in = 6 miles