@misc{indiciaee70c3b2e4c0f,
  title = {Claim map, Bull Canyon quadrangle, Montrose and San Miguel Counties, Colorado},
  author = {Raymond Dewey Sample and Howard F. Albee and H.G. Stephens},
  year = {1961},
  doi = {10.3133/ofr61134},
  url = {https://pubs.usgs.gov/publication/ofr61134},
  note = {Source identifier: ofr61134}
}