@misc{indiciaeb56816c58a24,
  title = {Geology and ore deposits near Lake City, Colorado},
  author = {John Duer Irving and Howland Bancroft},
  year = {1911},
  doi = {10.3133/b478},
  url = {https://pubs.usgs.gov/publication/b478},
  note = {Source identifier: b478}
}