@misc{indiciae4d2ca806004a,
  title = {Aeromagnetic map of the Phillips quadrangle, Franklin County, Maine},
  author = {G. R. Boynton and F. P. Gilbert},
  year = {1964},
  doi = {10.3133/gp479},
  url = {https://pubs.usgs.gov/publication/gp479},
  note = {Source identifier: gp479}
}