@misc{indiciaef94db0f23ecb,
  title = {Jamestown-Tower folio, Jamestown, Eckelson, and Tower quadrangles, North Dakota},
  author = {Daniel Everett Willard},
  year = {1909},
  doi = {10.3133/gf168},
  url = {https://pubs.usgs.gov/publication/gf168},
  note = {Source identifier: gf168}
}