@misc{indiciaea877a0966670,
  title = {Aeromagnetic map of the Norfolk quadrangle and parts of the West Torrington and South Sandisfield quadrangles, Litchfield County, Connecticut},
  author = {Members of the Engineering Geology and Ground Water Branches, U.S. Geological Survey},
  year = {1969},
  doi = {10.3133/gp642},
  url = {https://pubs.usgs.gov/publication/gp642},
  note = {Source identifier: gp642}
}