@misc{indiciaeb2aafa11539a,
  title = {Geologic and structure contour map of the Tisdale anticline and vicinity, Johnson and Natrona Counties, Wyoming},
  author = {Everett E. Richardson},
  year = {1957},
  doi = {10.3133/om194},
  url = {https://pubs.usgs.gov/publication/om194},
  note = {Source identifier: om194}
}