@misc{indiciae8895f2df526c,
  title = {Map exhibiting that portion of the State of Pennsylvania traversed by the surveys for a continuous rail road from Harrisburg to Pittsburg made under the direction of Charles L. Schlatter, c.e. in the year 1839 and 1840},
  author = {bowen, john t. and cramer, charles},
  year = {1840},
  url = {https://www.loc.gov/item/gm70005005/},
  note = {Source identifier: gm70005005}
}