@misc{indiciae14150ddec3af,
  title = {Aeromagnetic map of Mount Washington and vicinity, New Hampshire and Maine},
  author = {Members of the Engineering Geology and Ground Water Branches, U.S. Geological Survey},
  year = {1973},
  doi = {10.3133/gp891},
  url = {https://pubs.usgs.gov/publication/gp891},
  note = {Source identifier: gp891}
}