@misc{indiciae6e0426724187,
  title = {Geologic map of the Madison Junction quadrangle, Yellowstone National Park, Wyoming},
  author = {Robert L. Christiansen and H. Richard Blank},
  year = {1974},
  doi = {10.3133/gq1190},
  url = {https://pubs.usgs.gov/publication/gq1190},
  note = {Source identifier: gq1190}
}