@misc{indiciae0c7eaf88f273,
  title = {Aeromagnetic map of the Pound Ridge quadrangle, Westchester County, New York, and Fairfield County, Connecticut},
  author = {Members of the Engineering Geology and Ground Water Branches, U.S. Geological Survey},
  year = {1971},
  doi = {10.3133/gp821},
  url = {https://pubs.usgs.gov/publication/gp821},
  note = {Source identifier: gp821}
}