The Maps Research Guide offers more info about our map collection.
Geological maps: an Introduction (4th floor QE 36.M33 1990)
World atlas of geology and mineral deposits (2nd floor G1046.C5 D45 1980)
Atlas of economic mineral deposits (4th floor TN263 .D57)
Geospatial Data from <data.gov> locate federal, state, and local geospatial data and information
Search USGS National Geological Map Database
Search USGS Geographic Names Information System (GNIS)