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Founded in1934 and located in Chicago, IL with a 1993 membership of 8,300, the IAAO seeks to ameliorate assessment standards as well as to perform ongoing property assessment research. The association maintains a 10,000 volume library housing materials on tax administration, appraisal, land economics, land use, and local government standards. The IAAO conducts educational programs and offers seminars. It also awards professional designations and task forces on various professional subjects.