@misc{indiciae9ad832df14d4,
  title = {Surficial geologic map of the Litchfield quadrangle, Litchfield County, Connecticut},
  author = {Charles Reynolds Warren},
  year = {1970},
  doi = {10.3133/gq848},
  url = {https://pubs.usgs.gov/publication/gq848},
  note = {Source identifier: gq848}
}