1849 Geological Survey Map of Isle Royale, Lake Superior, Michigan – Antique Mineral and Copper Mining Chart Size:70x100 cm - UNFRAMED Featuring key landmarks such as

Featuring key landmarks such as the Maryland State House

The map features carefully labeled towns

including churches

ensuring that the elaborate border patterns

echoing lavender-scented countryside that shaped a proud

1849 Geological Survey Map of Isle Royale, Lake Superior, Michigan – Antique Mineral and Copper Mining Chart Size:70x100 cm - UNFRAMED Featuring key landmarks such asThis stunning 1849 geological map of Isle Royale, located in Lake Superior, Michigan, presents an incredibly detailed depiction of the islands topographical and mineral features. Originally created as part of an extensive geological survey, it highlights copper rich mineral lands, mining sites, and key geological formations. The intricate linework and color coding differentiate rock types, while annotations mark abandoned mining operations and mineral