@misc{indiciae08089b2f29ee,
  title = {Map showing tentative boundary of proposed Shenandoah National Park Virginia},
  author = {U.S. Geological Survey},
  year = {1928},
  doi = {10.3133/70260988},
  url = {https://pubs.usgs.gov/publication/70260988},
  note = {Source identifier: 70260988}
}