@misc{indiciae161bfc68760c,
  title = {The Orofino coal field, Clearwater, Lewis, and Idaho Counties, Idaho},
  author = {C. T. Lupton},
  year = {1916},
  doi = {10.3133/b621i},
  url = {https://pubs.usgs.gov/publication/b621I},
  note = {Source identifier: b621I}
}