| 1. |  | Illinois, Virginia quadrangle | Maps; Topographic maps; Topography; Illinois; Virginia (Ill.) | 1 map : col.; Relief shown by contours and spot heights.; "Surveyed in 1928 and 1932."; "Contour interval 10 feet."; Shows roadway classification as of 1935.; Coordinates: (W 90⁰15ʹ00ʺ--W 90⁰00ʹ00ʺ/N... |
