@misc{indiciaeab06e2fed319,
  title = {Aeromagnetic map of the Cupsuptic quadrangle, Oxford and Franklin Counties, Maine},
  author = {G. R. Boynton and Francis P. Gilbert},
  year = {1964},
  doi = {10.3133/ofr6418},
  url = {https://pubs.usgs.gov/publication/ofr6418},
  note = {Source identifier: ofr6418}
}