@misc{indiciae6b88e640e4e7,
  title = {Photogeologic map of the Escalante Forks quadrangle, Mesa, Montrose and Delta Counties, Colorado},
  author = {R.J. Hackman},
  year = {1958},
  doi = {10.3133/i274},
  url = {https://pubs.usgs.gov/publication/i274},
  note = {Source identifier: i274}
}