@misc{indiciae0e32a95c578d,
  title = {Preliminary Field Report of the United States Geological Survey of Colorado and New Mexico},
  author = {Ferdinand Vandeveer Hayden},
  year = {1869},
  doi = {10.3133/70038884},
  url = {https://pubs.usgs.gov/publication/70038884},
  note = {Source identifier: 70038884}
}