@misc{indiciaea5641a041c01,
  title = {Bedrock geologic map of the New Britain quadrangle, Connecticut},
  author = {Howard E. Simpson},
  year = {1966},
  doi = {10.3133/gq494},
  url = {https://pubs.usgs.gov/publication/gq494},
  note = {Source identifier: gq494}
}