Geologic
National Geologic Map Database - Catalog (USGS) — http://ngmdb.usgs.gov/ngmdb/ngm_compsear...
National Geologic Map Database - State Map (USGS) — http://ngmdb.usgs.gov/ngmdb/ngm_SMsearc...
Links to State Geological Surveys (AASG) — http://www.stategeologists.org/
USGS Publications Warehouse (USGS) — http://infotrek.er.usgs.gov/pubs/
U.S. State Geologic Maps (About.com) — http://geology.about.com/od/stategeologicmaps/Geologic_M...
Digital State Geologic Maps (USGS) — http://minerals.usgs.gov/projects/surveys_and_analysis/dig_g...
State Geologic Cartobibliography, AL-MT — http://www.library.ucsb.edu/people/larsgaard/states.html
State Geologic Cartobibliography, NV-WY — http://www.library.ucsb.edu/people/larsgaard/state_z.html
TN Division of Geology Catalogue of Publications — http://www.tennessee.gov/environment/tdg/maps/pdf/cop.pdf
Tennessee Landforms (TOM Dunigan) — http://www.cs.utk.edu/~dunigan/landforms/
TN Soil Surveys (UT Ag Vet Med Library) — http://www.lib.utk.edu/agvet/agriculture/worksheet.html
Geologic Atlas of the United States 1894-1945 (Texas A&M University) — http://txspace.tamu.edu...
Historic Geology Maps (David Rumsey Map Collection) — http://www.davidrumsey.com/directory/wh...
Geologic Maps and Mapping-(NCGMP) — http://ncgmp.usgs.gov/ncgmpgeomaps/
Geologic Maps (USGS) — http://geomaps.wr.usgs.gov/parks/gmap/index.html