Digital geologic map of Yellowstone National Park, Idaho, Montana, and Wyoming and vicinity [computer file]
Christiansen RL and Wahl RR. 1999. Digital geologic map of Yellowstone National Park, Idaho, Montana, and Wyoming and vicinity [computer file]. United States Geological Survey. Reston, VA. Open File Report
Universal transverse Mercator proj. (W11115Æ--W 10948Æ/N 4507Æ--N 4400Æ)