@misc{indiciaeb6d4fcb10abd,
  title = {Aeromagnetic map of New York},
  author = {Isidore Zietz and F. P. Gilbert},
  year = {1981},
  doi = {10.3133/gp938},
  url = {https://pubs.usgs.gov/publication/gp938},
  note = {Source identifier: gp938}
}