@misc{indiciae157e2ef9c97b,
  title = {Photogeologic map Mount Peale 4 quadrangle, Grand and San Juan Counties, Utah},
  author = {R.J. Hackman},
  year = {1953},
  doi = {10.3133/ofr5391},
  url = {https://pubs.usgs.gov/publication/ofr5391},
  note = {Source identifier: ofr5391}
}