1849 Geological Survey Map of Isle Royale, Lake Superior, Michigan – Antique Mineral and Copper Mining Chart Size:70x100 cm - UNFRAMED ensuring that the elaborate border

ensuring that the elaborate border patterns

period typography

Whether you’re a proud Montrealer

echoing lavender-scented countryside that shaped a proud

an appreciation for maritime history

1849 Geological Survey Map of Isle Royale, Lake Superior, Michigan – Antique Mineral and Copper Mining Chart Size:70x100 cm - UNFRAMED ensuring that the elaborate borderThis 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