@misc{indiciae37a5c4f4e83a,
  title = {Guidebook of the western United States: Part E - The Denver \& Rio Grande Western route},
  author = {Marius R. Campbell},
  year = {1922},
  doi = {10.3133/b707},
  url = {https://pubs.usgs.gov/publication/b707},
  note = {Source identifier: b707}
}