@misc{indiciae4080cd81527b,
  title = {A third Kevin-Sunburst map},
  author = {C. E. Erdmann and J.T. Gist and J.W. Nordquist},
  year = {1947},
  doi = {10.3133/ofr4719},
  url = {https://pubs.usgs.gov/publication/ofr4719},
  note = {Source identifier: ofr4719}
}