| 1. |  | Nokomis quadrangle, Illinois : 15 minute series (topographic) | Illinois; Maps; Topographic maps; Topography; Nokomis (Ill.) | 1 map : col.; Relief shown by contours and spot heights.; "Contour interval 10 feet."; "Culture and drainage in part compiled from aerial photographs taken 1939. Topography by plane-table methods 1946."... |
