@misc{indiciae880ffceaa6c1,
  title = {Geologic map of the Chalk Hills quadrangle, Albany and Carbon Counties, Wyoming},
  author = {E.N. Harshman},
  year = {1964},
  doi = {10.3133/ofr6466},
  url = {https://pubs.usgs.gov/publication/ofr6466},
  note = {Source identifier: ofr6466}
}