@misc{indiciaedb129ef74c05,
  title = {Aeromagnetic map of part of the Canaan quadrangle, Berkshire County, Massachusetts, and Columbia and Rensselaer Counties, New York},
  author = {Peter Popenoe and G. R. Boynton and G. L. Zandle},
  year = {1964},
  doi = {10.3133/gp450},
  url = {https://pubs.usgs.gov/publication/gp450},
  note = {Source identifier: gp450}
}