@misc{indiciaed57d708b8f57,
  title = {The American Union railroad map of the United States, British possessions. West Indies, Mexico, and Central America},
  author = {guernsey, darius l.},
  year = {1874},
  url = {https://www.loc.gov/item/gm71000837/},
  note = {Source identifier: gm71000837}
}