@misc{indiciaed506057ec030,
  title = {Aeromagnetic map of the Franklin quadrangle, Sussex and Morris Counties, New Jersey},
  author = {John R. Henderson and Natalie S. Tyson},
  year = {1957},
  doi = {10.3133/gp162},
  url = {https://pubs.usgs.gov/publication/gp162},
  note = {Source identifier: gp162}
}