@misc{indiciaef7af492da286,
  title = {Map of the Kokomo (Tenmile) zinc-lead mining district, Colorado},
  author = {A.M. Koschmann and F. G. Wells},
  year = {1948},
  doi = {10.3133/ofr4834},
  url = {https://pubs.usgs.gov/publication/ofr4834},
  note = {Source identifier: ofr4834}
}