@misc{indiciae90e094545859,
  title = {Preliminary geologic and vein maps of part of the Central City district, Gilpin and Clear Creek Counties, Colorado},
  author = {Paul Kibler Sims and Avery Ala Drake and Robert Hadley Moench},
  year = {1953},
  doi = {10.3133/tei304},
  url = {https://pubs.usgs.gov/publication/tei304},
  note = {Source identifier: tei304}
}