@misc{indiciaeeec4f066496e,
  title = {Scanning and georeferencing historical USGS quadrangles (ver. 2.0, May 2015)},
  author = {Larry R. Davis and William J. Carswell},
  year = {2015},
  doi = {10.3133/fs20113009(version2.0)},
  url = {https://pubs.usgs.gov/publication/fs20113009(VERSION2.0)},
  note = {Source identifier: fs20113009(VERSION2.0)}
}