Below title area: C.B. Graham, lithogr., Coordinates not present on map and are approximated., Relief shown by hachures., and Shows lead mines and copper, iron and zinc ores.
Publisher:
s.n.,
Subject (Name):
Graham, C. B. (Curtis B.)
Subject (Topic):
Geology--Illinois--Maps, Geology--Iowa--Maps, Geology--Wisconsin--Maps, Mines and mineral resources--Illinois--Maps, Mines and mineral resources--Iowa--Maps, and Mines and mineral resources--Wisconsin--Ma
