@misc{indiciae27e4ee70371b,
  title = {Aeromagnetic map of the Avon quadrangle, Hartford County, Connecticut},
  author = {P. W. Philbin and C. W. Smith},
  year = {1966},
  doi = {10.3133/gp594},
  url = {https://pubs.usgs.gov/publication/gp594},
  note = {Source identifier: gp594}
}