@misc{indiciae4417a838bf57,
  title = {Surficial geologic map of the west Yellowstone Quadrangle, Yellowstone National Park and adjoining area, Montana, Wyoming, and Idaho},
  author = {H.A. Waldrop},
  year = {1975},
  doi = {10.3133/i648},
  url = {https://pubs.usgs.gov/publication/i648},
  note = {Source identifier: i648}
}