@misc{indiciae4768b0d331e4,
  title = {Surficial geologic map of the Pelican Cone Quadrangle, Yellowstone National Park and adjoining area, Wyoming},
  author = {G.M. Richmond and H.A. Waldrop},
  year = {1972},
  doi = {10.3133/i638},
  url = {https://pubs.usgs.gov/publication/i638},
  note = {Source identifier: i638}
}