@misc{indiciaef8220ffd0eb1,
  title = {Barnesboro-Patton folio, Pennsylvania},
  author = {Marius Robinson Campbell and Fredrick G. Clapp and Charles Butts},
  year = {1913},
  doi = {10.3133/gf189},
  url = {https://pubs.usgs.gov/publication/gf189},
  note = {Source identifier: gf189}
}