The Appraisal Foundation (TAF)
Authorized by Congress as the source of appraisal standards and appraiser qualifications.
A not-for-profit educational organization dedicated to the advancement of professional valuation, was established by the appraisal profession in the United States in 1987. Since its inception, the Foundation has worked to foster professionalism in appraising.
For more information: http://www.appraisalfoundation.org/s_appraisal/bin.asp?CID=20&DID=505&DOC=FILE.PDF