@misc{indiciaea01cc408bf6a,
  title = {Maps showing geology and outcrops of part of the Virginia City and Alder quadrangles, Madison County, Montana},
  author = {K. L. Wier},
  year = {1982},
  doi = {10.3133/mf1490},
  url = {https://pubs.usgs.gov/publication/mf1490},
  note = {Source identifier: mf1490}
}