@misc{indiciae5d86e770aba8,
  title = {Aeromagnetic map of the Torrington quadrangle, Litchfield and Hartford Counties, Connecticut},
  author = {P. W. Philbin and C. W. Smith},
  year = {1966},
  doi = {10.3133/gp589},
  url = {https://pubs.usgs.gov/publication/gp589},
  note = {Source identifier: gp589}
}