@misc{indiciaec04ec00af07a,
  title = {Aeromagnetic map of the Old Mystic quadrangle and part of the Mystic quadrangle, Connecticut and Rhode Island},
  author = {G. R. Boynton and C. W. Smith},
  year = {1965},
  doi = {10.3133/gp544},
  url = {https://pubs.usgs.gov/publication/gp544},
  note = {Source identifier: gp544}
}