| 2. |  | Crete quadrangle, Illinois-Indiana : 15 minute series (topographic) | Illinois; Maps; Topographic maps; Topography; Crete (Ill.); Indiana | 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 1946."; "Contour interval 10 feet."... |
