@misc{indiciae13dfb11774ec,
  title = {Map showing drainage areas, Marlborough Quadrangle, Connecticut},
  author = {M. P. Thomas and J.E. Palmer},
  year = {1975},
  doi = {10.3133/mf645b},
  url = {https://pubs.usgs.gov/publication/mf645B},
  note = {Source identifier: mf645B}
}