@misc{indiciae61549fbdc303,
  title = {Aeromagnetic map of parts of the Elizabethtown and Port Henry quadrangles, Essex County, New York},
  author = {James R. Balsley and R. W. Bromery},
  year = {1965},
  doi = {10.3133/gp506},
  url = {https://pubs.usgs.gov/publication/gp506},
  note = {Source identifier: gp506}
}