Relief shown by contours and spot heights.;Shows roadway classification as of 1942.;"Contour interval 20 feet";"Surveyed in 1909, 1922, 1936, 1937 and 1942";(W 90⁰00ʹ00ʺ--W 89⁰45ʹ00ʺ/N 42⁰30ʹ00ʺ--N 42⁰15ʹ00ʺ);1 map, colored;46 x 33 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/