@misc{indiciae0c674830ab3f,
  title = {Preliminary geologic map of the Mount Wilson quadrangle, San Miguel County, Colorado},
  author = {C. S. Bromfield and A.R. Conroy},
  year = {1963},
  doi = {10.3133/mf273},
  url = {https://pubs.usgs.gov/publication/mf273},
  note = {Source identifier: mf273}
}