| 1. |  | Illinois-Kentucky-Missouri, Cairo quadrangle | Illinois; Maps; Topographic maps; Topography; Cairo (Ill.); Kentucky; Missouri | 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 1926-1929 and 1931."; "Missouri part... |
