Geological Resources
| North Dakota | http://explorer.ndic.state.nd.us/ |
| Wyoming | http://wogcc.state.wy.us/ |
| Wyoming State Geological Survey | http://www.wsgs.uwyo.edu/ |
| U.S. Geological Survey | http://www.usgs.gov/ |
| American Association of Petroleum Geologists | http://www.aapg.org/ |
| Rocky Mountain Association of Geologists | http://www.rmag.org/ |
| Wyoming Board of Professional Geologists | http://wbpg.wy.gov/ |