@misc{indiciae7d08390ae3e6,
  title = {Map of Pennsylvania Railroad with its connections, showing the different routes, projected or constructed between the seaboard \& the western states},
  author = {friend \& aub and pennsylvania railroad},
  year = {1851},
  url = {https://www.loc.gov/item/98688762/},
  note = {Source identifier: 98688762}
}