| 1. |  | Illinois (Madison County), Edwardsville quadrangle | Illinois; Maps; Topographic maps; Topography; Edwardsville (Ill.); Madison County (Ill.) | 1 map : col.; Relief shown by contours and spot heights.; "Culture and drainage in part compiled from aerial photographs taken by Air Corps, U.S. Army."; "Surveyed in 1927"; "Contour interval 20 feet";... |
