@misc{indiciaee36370b5951f,
  title = {Northwest Rangeley coal area, Rio Blanco and Moffat Counties, Colorado},
  author = {David L. Gaskill and G. H. Horn},
  year = {1961},
  doi = {10.3133/ofr6154},
  url = {https://pubs.usgs.gov/publication/ofr6154},
  note = {Source identifier: ofr6154}
}