@misc{indiciae3adeff3435e7,
  title = {Ninth Annual Report of the United States Geological and Geographical Survey of the Territories, embracing Colorado and parts of adjacent Territories: being a report of progress of the exploration for the year 1875},
  author = {Ferdinand Vandeveer Hayden},
  year = {1877},
  doi = {10.3133/70038933},
  url = {https://pubs.usgs.gov/publication/70038933},
  note = {Source identifier: 70038933}
}