@misc{indiciae1f8a778d5add,
  title = {Bismarck folio, North Dakota},
  author = {A.G. Leonard and W. C. Alden},
  year = {1912},
  doi = {10.3133/gf181},
  url = {https://pubs.usgs.gov/publication/gf181},
  note = {Source identifier: gf181}
}