There are a couple ways to get copies of the Keys to Soil Taxonomy. Copies of the Keys to Soil Taxonomy (12th Ed.), and other soils related publications are available from the NRCS Distribution Center (http://nrcspad.sc.egov.usda.gov/DistributionCenter/ ). The Distribution Center can also be reached toll free by phone at 1-888-526-3227 or via email at NRCSDistributionCenter@ia.usda.gov.
International Customers will need to call (515) 270-4864, or 1-888-LANDCARE or email the Distribution Center at the address above to place an order.
Most technical documents used in soil survey are available on the NRCS soils web site at http://www.nrcs.usda.gov/wps/portal/nrcs/site/soils/home/ . Specifically, the 12th Keys to Soil Taxonomy in PDF format is found at http://www.nrcs.usda.gov/wps/portal/nrcs/detail/soils/ref/?cid=nrcs142p2_053580 .
If the NRCS Distribution Center is unable to fulfill your request and a printed copy is required, please email the Soils Hotline at SoilsHotline@lin.usda.gov . A small number of printed copies may be available for distribution.