| 1. |  | Illinois (Macoupin County) Gillespie quadrangle : topography | Illinois; Maps; Topographic maps; Topography; Gillespie (Ill.); Macoupin County (Ill.) | 1 map : col.; Relief shown by contours and spot heights.; "Surveyed in 1912."; "Surveyed in cooperation with the State of Illinois."; "Contour interval 20 feet." |
