@misc{indiciaef32135d0a8b8,
  title = {Aeromagnetic map of the Rangeley quadrangle and part of the Kennebago Lake quadrangle, Franklin and Oxford Counties, Maine},
  author = {G. R. Boynton and Francis P. Gilbert},
  year = {1964},
  doi = {10.3133/ofr6421},
  url = {https://pubs.usgs.gov/publication/ofr6421},
  note = {Source identifier: ofr6421}
}