Note: These data files are for use in geographical information systems for analysis and integration with other geospatial data. They are not directly viewable using WWW browser or image viewing tools. The USGS offers free software for viewing some digital cartographic products, including DLG-O, DLG/SDTS and DRG data. These viewers run on Windows 95/NT only. They are tools for data preview, and are not substitutes for commercial geographic information system (GIS) software.
Translation and Display Software:
DLGV32 — Windows 95 software for viewing USGS Digital Line Graph Optional (DLG-O), Digital Raster Graphic (DRG) data, and Spatial Data Transfer Standard (SDTS) data.
U.S. Department of the Interior |
U.S. Geological Survey