@misc{indiciae4c8b9bea4891,
  title = {Geology and ore deposits of part of the Placerville district, San Miguel County, Colorado},
  author = {Verl Richard Wilmarth and Charles C. Hawley},
  year = {1958},
  doi = {10.3133/tei253},
  url = {https://pubs.usgs.gov/publication/tei253},
  note = {Source identifier: tei253}
}