DLG

Digital Line Graph

Scale Land Use Land Cover

http://www.mapcruzin.com/free-geodata-shapefiles/usgs-geospatial-data-geodata-geographic-download.htm

Known as digital line graphs, DLG maps show roads, boundaries, and other information commonly found on topographical maps. These maps are created from the U.S Geological Survey maps which the features are used in GIS applications. DLG data are classified as large, intermediate, and small scale. Using GIS this DLG map is of Illinois.