@misc{indiciae0cc49f41fdd7,
  title = {Photogeologic map of the Norwood-1 Quadrangle, Montrose and Ouray Counties, Colorado},
  author = {C. H. Marshall},
  year = {1958},
  doi = {10.3133/tem1080},
  url = {https://pubs.usgs.gov/publication/tem1080},
  note = {Source identifier: tem1080}
}