@misc{indiciaef4788994a5b9, title = {Water supply for Persimmon Gap and Santa Elena ranger stations, Big Bend National Park, Brewster county, Texas}, author = {R. C. Baker}, year = {1958}, doi = {10.3133/ofr589}, url = {https://pubs.usgs.gov/publication/ofr589}, note = {Source identifier: ofr589} }