Proposed American National Standard CACM August, 1970 Kerpelman, C. State identifiers, State abbreviation, States of the United States, data elements, data codes, numeric codes, geopolitical subdivisions, geographic codes 3.35 3.57 CA700815 JB February 10, 1978 3:10 PM 2006 5 2006 2006 5 2006 2006 5 2006