@misc{indiciaed09d720f2947,
  title = {Mines and prospects, Idaho Springs district, Clear Creek and Gilpin counties, Colorado -- Descriptions and maps},
  author = {Robert Hadley Moench and Avery Drake},
  year = {1966},
  doi = {10.3133/ofr6687},
  url = {https://pubs.usgs.gov/publication/ofr6687},
  note = {Source identifier: ofr6687}
}