@misc{indiciaeb21e7d7e9b4c,
  title = {Preliminary materials map of the Massachusetts portion of the Hancock quadrangle, Mass. - N.Y.},
  author = {George William Holmes},
  year = {1967},
  doi = {10.3133/ofr67119},
  url = {https://pubs.usgs.gov/publication/ofr67119},
  note = {Source identifier: ofr67119}
}