@misc{indiciae573fd21f94b4,
  title = {Aeromagnetic map of the Ashaway quadrangle and part of the Watch Hill quadrangle, Connecticut and Rhode Island},
  author = {G. R. Boynton and C. W. Smith},
  year = {1965},
  doi = {10.3133/gp547},
  url = {https://pubs.usgs.gov/publication/gp547},
  note = {Source identifier: gp547}
}