@misc{indiciae017f85157642,
  title = {Aeromagnetic map of part of the Mechanicsburg quadrangle, Cumberland and York Counties, Pennsylvania},
  author = {Randolph Wilson Bromery and G. L. Zandle},
  year = {1961},
  doi = {10.3133/gp274},
  url = {https://pubs.usgs.gov/publication/gp274},
  note = {Source identifier: gp274}
}