Monday, August 01, 2011

USGS maps

The U.S. Geological Survey has announced a massive release of historical topographical maps. “For more than 130 years, the USGS topographic mapping program has accurately portrayed the complex geography of our Nation. The historical topographic map collection contains all editions and all scales of USGS topographic quadrangles. Files are high resolution (600 DPI) scanned images of all maps from the USGS legacy collection.” This is over 200,000 maps spanning 1884-2006.

(H/T ResearchBuzz)