Bulletin 6208 by A. T. Long, Geologist, U.S. Geological Survey | April 1962

• Bulletin 6208 - Ground-Water Geology of Edwards County, Texas (pdf - 7.85MB)
• Figure 5 (pdf - 4.77MB) - Geologic Section A-A', Edwards County
• Figure 7 (pdf - 4.98MB) - Approximate altitude of water levels in wells in the Edwards and associated limestones, Edwards County, October 1953 - September 1955
• Plate 1 (pdf - 5.26MB) - Geologic map of Edwards County, Texas, showing location of wells and springs
  • Plate 1a (pdf - 5.26MB) - Continued