@misc{indiciaeadcd1f4180d1,
  title = {Mercersburg-Chambersburg folio, Pennsylvania},
  author = {George W. Stose},
  year = {1909},
  doi = {10.3133/gf170},
  url = {https://pubs.usgs.gov/publication/gf170},
  note = {Source identifier: gf170}
}