@misc{indiciae77561cf6369c,
  title = {Preliminary materials map, Massachusetts portion, Berlin quadrangle, New York-Massachusetts-Vermont},
  author = {George William Holmes},
  year = {1965},
  doi = {10.3133/ofr6573},
  url = {https://pubs.usgs.gov/publication/ofr6573},
  note = {Source identifier: ofr6573}
}