@misc{indiciae3b9a54e46898,
  title = {Ouray folio, Colorado},
  author = {Whitman Cross and Ernest Howe and John Duer Irving},
  year = {1907},
  doi = {10.3133/gf153},
  url = {https://pubs.usgs.gov/publication/gf153},
  note = {Source identifier: gf153}
}