Footnotes
^ A: The State of Alaska uniquely crosses or spans the 180 degree East-West Meridian, and The State of Alaska's territory includes many islands and in several areas "water". This uniquely results in (2) two or (3) three different definitions of East-, South- and West-ernmost points.
^ B: Latitude and longitude coordinates of Ohio's (and other state's) borders "move" with changing geographic co-ordinate systems, see North American Datum and WGS 84.
Read more about this topic: Extreme Points Of U.S. States