@misc{indiciaebafd13a02f53,
  title = {Contour map of the bedrock surface, Collinsville Quadrangle, Connecticut},
  author = {E. H. Handman},
  year = {1975},
  doi = {10.3133/mf654a},
  url = {https://pubs.usgs.gov/publication/mf654A},
  note = {Source identifier: mf654A}
}