@misc{indiciae75501a4880a4,
  title = {Aeromagnetic map of the Houlton quadrangle, Aroostook County, Maine},
  author = {W.J. Dempsey},
  year = {1962},
  doi = {10.3133/gp295},
  url = {https://pubs.usgs.gov/publication/gp295},
  note = {Source identifier: gp295}
}