"A New Map of the State of Illinois", Thomas, Cowperthwait & Co.
Period: 1850 (dated)
Publication: Mitchell's New Universal Atlas 
Color: Hand Color
13 x 15.7 inches
33 x 39.9 cm
The state here appears nearly fully developed lacking only Ford and Douglas counties, both of which were created in 1859. The effects of early internal improvements and rapid settlement are many. No less than 6 rail lines originate in Chicago, branching out to serve all but the most southern counties. Brightly colored by county, with transportation routes highlighted.
Few faint spots, tiny hole filled, very good overall.