@misc{indiciaee9500b4db6bb,
  title = {Aeromagnetic map of the Bridgewater quadrangle, Aroostook County, Maine},
  author = {J. R. Henderson},
  year = {1962},
  doi = {10.3133/gp291},
  url = {https://pubs.usgs.gov/publication/gp291},
  note = {Source identifier: gp291}
}