The 100th meridian first marked the boundary between the Republic of Texas and the vast Louisiana Purchase establishing this boundary was one of the most far reaching events in which the nation engaged.
In 1927 the U.S. Supreme Court established the OK/TX state line along this boundary. The 100th meridian chapter, NSDAR dedicated this project to identify this state line located 4 miles west of Hollis, OK, on U.S. highway 62.
Sponsored by the Harmon Co. Historical SocietyDedicated by 100th Meridian Chapter NSDARJuly 1991
Top of marker:(Symbol) Daughters of the American Revolution. NSDAR Founded 1890. 100th Median CH NSDAR Organized Dec. 1964
Bottom of marker:Willis Granite ProductsGranite, Oklahoma
5 miles west of Hollis, Oklahoma, between the Oklahoma and Texas state line signs. South side of road in front of Oklahoma state sign.