» National Soil Data Access Facility    NRCS data and related information, including soil survey manuals, classifications, lists of published soil surveys (some online), general information about soils, and related links.    http://soils.usda.gov/

» Natural Resources Conservation Service Maps, Imagery, Data, and Analysis    NRCS distributes natural resources inventory, maps, soils data, and related materials to the public.    http://www.nrcs.usda.gov/technical/maps.html

» Natural Resources Conservation Service, NRCS    Formerly the U.S. Soil Conservation Service. NCRS program areas include soil survey, conservation assistance, farmland protection, grazing lands conservation, and watershed protection.    http://www.nrcs.usda.gov/