If you’ve been nosing around the Web looking for free maps, the Archive’s new collection of nearly sixty thousand digital raster graphic (DRG) maps from the USGS is nothing to sneeze at. These maps are in the public domain, but getting access to them usually costs money. The Archive provides them for free thanks to the work of Jared Benedict of the Libre Map Project and donations from over 100 map liberators. For best results, the maps should be viewed with global positioning software or a map viewer.
A few examples: