@misc{indiciae77793a6121c9,
  title = {Aeromagnetic map of the Island Falls quadrangle, Aroostook and Penobscot Counties, Maine},
  author = {W.J. Dempsey},
  year = {1962},
  doi = {10.3133/gp293},
  url = {https://pubs.usgs.gov/publication/gp293},
  note = {Source identifier: gp293}
}