Bulletin 5601 by Charles L. R. Holt, Jr., U.S. Geological Survey | August 1956

• Bulletin 5601, Part 1 (pgs. 1-97) - Geology and Ground-Water Resources of Medina County, Texas (pdf - 31.3MB)
• Bulletin 5601, Part 3 (pgs. 177-260) (note "missing pages" are plates listed below) Driller's Logs of Wells in Bexar County, Texas (pdf - 24MB)
• Plate 1 (pdf - 5.76MB) - Geologic Map of Medina County, Texas Showing Location of Water Wells
  • Plate 1a (pdf - 5.90MB) - Continued
• Plate 2 (pdf - 5.10MB) - Geologic Sections of Medina County, Texas
• Plate 3 (pdf - 5.36MB) - Contour Map on Base of Grayson Shale, Medina County, Texas
  • Plate 3a (pdf - 5.43MB) - Continued
• Plate 4 (pdf - 5.39MB) - Map Showing Lines of Equal Pressure in the Principal Aquifer, January 1951
  • Plate 4a (pdf - 5.53MB) - Continued
• Plate 5 (pdf - 5.39MB) - Map Showing Lines of Equal Pressure in the Principal Aquifer, September 1952
  • Plate 5a (pdf - 5.44MB) - Continued