@misc{indiciae7c8ef69bb4d8,
  title = {Report of the Geological Exploration of the Fortieth Parallel, Volume II: Descriptive geology},
  author = {Arnold Hague and S. F. Emmons and Clarence King},
  year = {1877},
  doi = {10.3133/70039217},
  url = {https://pubs.usgs.gov/publication/70039217},
  note = {Source identifier: 70039217}
}