| 1. |  | Minier quadrangle, Illinois : 15 minute series (topographic) | Minier (Ill.); Illinois; Maps; Topographic maps; Topography | 1 map : col.; Relief shown by contours and spot heights.; "Culture and drainage in part compiled from aerial photographs taken 1939. Topography by plane-table methods 1930 and 1950-1951. Field check 1951";... |
