@misc{indiciae8a27bdd38cae,
  title = {Map of Virginia, Maryland and Delaware exhibiting the post offices, post roads, canals, rail roads \&c},
  author = {arrowsmith, john and burr, david h.},
  year = {1839},
  url = {https://www.loc.gov/item/98688346/},
  note = {Source identifier: 98688346}
}