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.
Natural Resources Conservation Service Maps, Imagery, Data, and Analysis: NRCS distributes natural resources inventory, maps, soils data, and related materials to the public.
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.