United States, Arkansas, Washington, Ozark Plateau: vicinity of Johnson, 5 miles north of Fayetteville. At Trout farm.
36.133434 -94.160859 +-2667m. WGS84
Used Google Streets, Historical USGS Topo (beta) Tulsa 1954 and Fayetteville 1958 maps, measured 5 miles north of city area, placed marker, edited radius which included the vicinity of Johnson.