@misc{indiciae1079c7daf6ef,
  title = {Coatesville-West Chester folio, Pennsylvania-Delaware},
  author = {Florence Bascom and George W. Stose},
  year = {1932},
  doi = {10.3133/gf223},
  url = {https://pubs.usgs.gov/publication/gf223},
  note = {Source identifier: gf223}
}