@misc{indiciae34950b0de001,
  title = {Photogeologic map, Mount Peale 9, San Juan County, Utah, and San Miguel and Montrose Counties, Colorado},
  author = {R.J. Hackman},
  year = {1953},
  doi = {10.3133/ofr5394},
  url = {https://pubs.usgs.gov/publication/ofr5394},
  note = {Source identifier: ofr5394}
}