@misc{indiciae68d4c6815a61,
  title = {List of elevations and distances in that portion of the United States west of the Mississippi River},
  author = {Ferdinand Vandeveer Hayden and C. Thomas},
  year = {1872},
  doi = {10.3133/70039705},
  url = {https://pubs.usgs.gov/publication/70039705},
  note = {Source identifier: 70039705}
}