@misc{indiciaeb21bd9eed0d0,
  title = {Map showing resources of coarse aggregate, Deep River quadrangle, Connecticut},
  author = {Dennis W. O’Leary},
  year = {1974},
  doi = {10.3133/mf524b},
  url = {https://pubs.usgs.gov/publication/mf524B},
  note = {Source identifier: mf524B}
}