Nicht von NYPL entwickelt oder unterstützt. Teil der weltweit größten Public-Domain-Quelle PICRYL.com.

copper mines and mining

foster j w john wells 1815 1873 creator

geological map

geological maps

geology

historic map

lake superior

lionel pincus and princess firyal map division

hill s w samuel worth 1815 1889 surveyor

public
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Geological map of the district between Portage Lake and Montreal River, Lake Superior, Michigan

Geological map of the district between Portage Lake and Montreal River...

Public domain image of a vintage map, geography atlas, maritime navigation, age of discovery, 16th-17th century, free to use, no copyright restrictions - Picryl description

Geological map of Keweenaw Point, Lake Superior, Michigan

Geological map of Keweenaw Point, Lake Superior, Michigan

Public domain image of a vintage map, geography atlas, maritime navigation, age of discovery, 16th-17th century, free to use, no copyright restrictions - Picryl description