@misc{indiciae101b5d61ae1d,
  title = {Aeromagnetic map of the Kennebago Lake quadrangle, Franklin County, Maine},
  author = {J. R. Henderson and F. P. Gilbert},
  year = {1963},
  doi = {10.3133/gp332},
  url = {https://pubs.usgs.gov/publication/gp332},
  note = {Source identifier: gp332}
}