@misc{indiciae8065e8842de6,
  title = {Fredericksburg folio, Virginia-Maryland},
  author = {Nelson Horatio Darton},
  year = {1894},
  doi = {10.3133/gf13},
  url = {https://pubs.usgs.gov/publication/gf13},
  note = {Source identifier: gf13}
}