@misc{indiciaeaba47733a180,
  title = {Preliminary materials map, Pittsfield West quadrangle, Massachusetts-New York},
  author = {George William Holmes},
  year = {1965},
  doi = {10.3133/ofr6575},
  url = {https://pubs.usgs.gov/publication/ofr6575},
  note = {Source identifier: ofr6575}
}