@misc{indiciae6a83988eafcf,
  title = {Aeromagnetic map of the Scotland quadrangle, Windham and New London Counties, Connecticut},
  author = {G. R. Boynton and C. W. Smith},
  year = {1965},
  doi = {10.3133/gp540},
  url = {https://pubs.usgs.gov/publication/gp540},
  note = {Source identifier: gp540}
}