@misc{indiciae216df3f27795,
  title = {1:100,000-scale Counties of the United States},
  author = {U.S. Dept of Commerce Bureau of Census},
  year = {1993},
  doi = {10.3133/70046238},
  url = {https://pubs.usgs.gov/publication/70046238},
  note = {Source identifier: 70046238}
}