This marks one route of the Mackenzie Scout Trail extending from Camp Supply, Crosby County to Fort Sumner, New Mexico and used by the Army, 1872-1875, by buffalo hunters, 1876-1878, and by cattlemen 1878 until the fencing of the range. Erected by Nancy Anderson Chapter, N.S.D.A.R. 1936. This block of granite is from the wall that encloses the grave of Nancy Anderson, 1750-1827, near Chester, S.C.