@misc{indiciae6665976cfbcd,
  title = {Digital atlas of Oklahoma},
  author = {A. H. Rea and C.J. Becker},
  year = {1997},
  doi = {10.3133/ofr9723},
  url = {https://pubs.usgs.gov/publication/ofr9723},
  note = {Source identifier: ofr9723}
}