@misc{indiciaef7f8c282a7a6,
  title = {John Wesley Powell's exploration of the Colorado River},
  author = {Mary C. Rabbitt},
  year = {1974},
  doi = {10.3133/70007448},
  url = {https://pubs.usgs.gov/publication/70007448},
  note = {Source identifier: 70007448}
}