@misc{indiciae619793c094bd,
  title = {Aeromagnetic map of the Morristown quadrangle, Morris County, New Jersey},
  author = {John R. Henderson and Natalie S. Tyson and May Wilson},
  year = {1958},
  doi = {10.3133/gp171},
  url = {https://pubs.usgs.gov/publication/gp171},
  note = {Source identifier: gp171}
}