Public

The Antarctic Digital Database (ADD) is the premier source of vector topographic data for Antarctica.Users must register to use the data

Note that some layers are free to download. Others must be requested through the Map and Data Library. All roads can be found for public use at this url http://gis.ny.gov/gisdata/inventories/details.cfm?DSID=932

The China Historical Geographic Information System (CHGIS) project was launched on January 8th 2001, with funding from the Luce Foundation. The CHGIS will establish a database of historical administrative units for different periods in Chinese… Read more.

The goal of this initiative is to develop a digital data base that contains all available bathymetric data north of 64 degrees North, for use by mapmakers, researchers, and others whose work requires a detailed and acurate knowledge of the depth and… Read more.