| http://www.w3.org/ns/prov#value | - A licensed real estate broker in Pennsylvania, Hayden is a member of many professional organizations, including the Society of Industrial Realtors, serving as its President in 1982; the Philadelphia Board of Realtors, serving as its President in 1985; the National Association of Realtors; the Urban Land Institute; and the Tri-State Commercial Alliance of Realtors.
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