1 map, colored;Relief indicated by contours and spot heights.;Contour interval 20 feet.;"Surveyed in 1906-1907.";Surveyed in cooperation with the State of Illinois.;45 x 36 cm.;1:62,500
The University of Illinois Map Library requests the following acknowledgement be included when using this Historical Map: Map provided courtesy of the Map Library at the University of Illinois at Urbana-Champaign.; No Copyright - United States; http://rightsstatements.org/vocab/NoC-US/1.0/