@misc{indiciae5b02c88085a5,
  title = {Scanning and georeferencing historical USGS quadrangles},
  author = {Larry R. Davis and G.J. Allord},
  year = {2011},
  doi = {10.3133/fs20113009},
  url = {https://pubs.usgs.gov/publication/fs20113009},
  note = {Source identifier: fs20113009}
}