@misc{indiciaeb95ddb68922e,
  title = {Sand and gravel pit data sheets and location map for the Torrington quadrangle, Connecticut},
  author = {Roger B. Colton},
  year = {1967},
  doi = {10.3133/ofr6765},
  url = {https://pubs.usgs.gov/publication/ofr6765},
  note = {Source identifier: ofr6765}
}