@misc{indiciae58a27abd1954,
  title = {Surficial geologic map of the Canyon Valley Quadrangle, Yellowstone National Park, Wyoming},
  author = {G.M. Richmond},
  year = {1977},
  doi = {10.3133/i652},
  url = {https://pubs.usgs.gov/publication/i652},
  note = {Source identifier: i652}
}