| 1. |  | Kenney quadrangle, Illinois : 15 minute series (topographic) | Illinois; Maps; Topographic maps; Topography; Kenney (Ill.) | 1 map : col.; Relief shown by contours and spot heights.; "Topography from aerial photographs by Kelsh plotter and by planetable surveys 1957. Aerial photographs taken 1956."; "Contour interval 10 feet."... |
