@misc{indiciaeb253e7e3e953,
  title = {Aeromagnetic map of the Putnam quadrangle and part of the Danielson quadrangle, Windham County, Connecticut},
  author = {Members of the Engineering Geology and Ground Water Branches, U.S. Geological Survey},
  year = {1969},
  doi = {10.3133/gp652},
  url = {https://pubs.usgs.gov/publication/gp652},
  note = {Source identifier: gp652}
}