- Balcones Energy Log Library
- Balcones Energy Log Library
- Cambe Geological Svc
- Coastal Bend Geological Lbry
- Corpus Christi Geological Lib
- Geological Data Library
- Geological Data Library
- Geomap
- Geomap
- Geomap Co
- Herold Geological Research Ctr
- International Sample Library
- Kathy Edwards Inc
- North Texas Sample Log Svc
- Oil Information Library
- Oil Information Library
- Oil Information Library
- Permian Basin Stratagraphic
- Petroleum Data Library Inc
- Riley Electric Logs
- Subsurface Library
