@misc{indiciaecec7c8aa4bff,
  title = {Geology and fuel resources of the southern part of the Oklahoma coal field. Part 4, The Howe-Wilburton district, Latimer and Le Flore Countie},
  author = {T. A. Hendricks},
  year = {1939},
  doi = {10.3133/b874d},
  url = {https://pubs.usgs.gov/publication/b874D},
  note = {Source identifier: b874D}
}