Type: Cartographic / Physical Format: Engineering maps / Date Created: <span class="single" data-blrl-single="1934">1934</span> - Minnesota Digital Library Search Results

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Map showing dam project of the Pigeon River Lumber Company, Cook County, Minnesota

Soudan Mine, No. 8 Shaft, 18th Level (Map One), Soudan, Minnesota

Soudan Mine, No. 8 Shaft, 15th Level, Soudan, Minnesota

Soudan Mine, No. 8 Shaft, 20th Level, Soudan, Minnesota