@misc{indiciaef1d1b4fcf9df,
  title = {Preliminary materials map, Ashley Falls quadrangle, Massachusetts-Connecticut},
  author = {George William Holmes},
  year = {1964},
  doi = {10.3133/ofr6479},
  url = {https://pubs.usgs.gov/publication/ofr6479},
  note = {Source identifier: ofr6479}
}