@misc{indiciaeefdf94c96716,
  title = {Aeromagnetic map of the Hancock quadrangle, Berkshire County, Massachusetts, and Rensselaer County, New York},
  author = {Peter Popenoe and G. R. Boynton and G. L. Zandle},
  year = {1964},
  doi = {10.3133/gp453},
  url = {https://pubs.usgs.gov/publication/gp453},
  note = {Source identifier: gp453}
}