@misc{indiciae5aa2b1f97ca5,
  title = {Geology and gold deposits of the Cripple Creek district, Colorado},
  author = {Waldemar Lindgren and Frederick Leslie Ransome},
  year = {1906},
  doi = {10.3133/pp54},
  url = {https://pubs.usgs.gov/publication/pp54},
  note = {Source identifier: pp54}
}