Mitchell, S. Augustus (Samuel Augustus), 1792-1868Plan of Chicago.;Greenwich, Washington.;1 map, colored;33 x 26 cm.;ca. 1:2,000,000JPEG2000https://digital.library.illinois.edu/items/95f250e0-82d4-0134-1f08-0050569601ca-aengS. Augustus Mitchell Jr. (Philadelphia), c1867.PublicCounty map of the state of Illinois.MapsIllinois1867University of Illinois Urbana-Champaign