@misc{indiciaeb50286e7878f,
  title = {Brownsville-Connellsville folio, Pennsylvania},
  author = {Marius Robinson Campbell},
  year = {1903},
  doi = {10.3133/gf94},
  url = {https://pubs.usgs.gov/publication/gf94},
  note = {Source identifier: gf94}
}