Ariz. Rev. Stat. § 11-108
Greenlee county, the county seat of which is Clifton, is bounded as follows:
Commencing at the point of intersection of the first standard parallel north, Gila and Salt River Guide meridian, with the east boundary of Arizona; which point is the southeast corner of Apache county; thence due west along such parallel to its intersection with the center of the Black river; thence in a general southwesterly direction down the center of such river to its intersection with the east boundary of the White Mountain or San Carlos Indian reservation as defined by the resurvey of 1915; thence due south along the east boundary line of the Indian reservation to the southeast corner of such Indian reservation, as established under instructions from the United States surveyor general of Arizona in the year 1883; thence in a south southeasterly direction in a direct line to the highest point of Thumb Butte; thence in a southerly direction following the boundary survey of 1912 to the summit of the north end of the Peloncillo range of mountains; thence in a general southeasterly direction along the summit of such range, as defined by the survey of 1912, to its intersection with the north boundary line of Cochise county, such point of intersection being the township line between townships eleven and twelve south, Gila and Salt River Guide meridian; thence east along the north boundary line of Cochise county to its intersection with the east boundary of Arizona, which point of intersection is the northeast corner of Cochise county; thence north along the east boundary of Arizona to the place of beginning.
A.R.S. § 11-108