@misc{indiciae176aa14e9f5e,
  title = {Ordovician and older rocks of the Bayhorse area, Custer County, Idaho},
  author = {S. W. Hobbs and William Henry Hays},
  year = {1990},
  doi = {10.3133/b1891},
  url = {https://pubs.usgs.gov/publication/b1891},
  note = {Source identifier: b1891}
}