@misc{indiciae3fa38078352c,
  title = {Aeromagnetic map of the York quadrangle, York County, Pennsylvania},
  author = {Randolph Wilson Bromery and G. L. Zandle},
  year = {1961},
  doi = {10.3133/gp270},
  url = {https://pubs.usgs.gov/publication/gp270},
  note = {Source identifier: gp270}
}