@misc{indiciae5872aa7f505c,
  title = {Gas in the Big Sand Draw anticline, Fremont County, Wyoming},
  author = {A. J. Collier},
  year = {1920},
  doi = {10.3133/b711e},
  url = {https://pubs.usgs.gov/publication/b711E},
  note = {Source identifier: b711E}
}