Subject: Lake Superior, Michigan
Period: 1847 (dated)
Publication: 
Color: Hand Color
Size:
21.3 x 14.8 inches
54.1 x 37.6 cm
This is an early edition of Jackson's important geological map that locates sandstone, conglomerate and trap formations and delineates copper veins as well as copper and silver mines.   A scale below title converts chains to miles.  Fancy title lettering.
References: cf. Marcou & Marcou #363
Condition: B+
There is some light offsetting in the image, else very good.  Issued folding.