Known to early Texans as one inch flow of water out of rocks. Site of a camp for travelers and freighters. Occupants of land around the spring included W. J. Greer, with a sheep camp, 1882; Francis Winans, with a cattle and sheep ranch, 1884; A. O. Burr, farming, about 1885. Cattlemen, including Frank Gray, camped here during roundups. Outlaws in 1880s frequented a hut nearby. Rocksprings Post Office opened 1891 in townsite platted for a new county seat at center of Edwards County. The rock spring still seeps in city and county historic park and playground. (1972)