This state line location includes a historic boundary marker established in 1877 after a series of contentious surveys aimed at defining the border between Arkansas and what was then called Indian Territory. The inscription on its north face reads “48 M,” for the 48th mile, “1877” on the south face for the year the marker was installed, “ARK” for Arkansas on the east face, and “CHOC” for Choctaw Territory on the west.
In 1976, the marker was listed on the National Register of Historic Places, making it one of the few remaining markers from this survey accessible to the public.