@misc{indiciae90ab56982160,
  title = {A reconnaissance of the Cottonwood-American Fork mining region, Utah},
  author = {B. S. Butler and G. F. Loughlin},
  year = {1916},
  doi = {10.3133/b620i},
  url = {https://pubs.usgs.gov/publication/b620I},
  note = {Source identifier: b620I}
}