@misc{indiciaeca8c4d310fa0,
  title = {Aeromagnetic map of the Peekskill quadrangle, Rockland, Orange, Putnam, and Westchester Counties, New York},
  author = {G. E. Andreasen and J. L. Vargo},
  year = {1962},
  doi = {10.3133/gp341},
  url = {https://pubs.usgs.gov/publication/gp341},
  note = {Source identifier: gp341}
}