@misc{indiciaea8622ef9b32b,
  title = {Claim map, Bull Canyon quadrangle, Montrose County [and San Miguel County], Colorado},
  author = {Raymond Dewey Sample and Howard F. Albee and Hal G. Stephens},
  year = {1953},
  doi = {10.3133/ofr61135},
  url = {https://pubs.usgs.gov/publication/ofr61135},
  note = {Source identifier: ofr61135}
}