@misc{indiciae471a87fec3a4,
  title = {Ore deposits of the Silver Peak quadrangle, Nevada},
  author = {J. E. Spurr},
  year = {1906},
  doi = {10.3133/pp55},
  url = {https://pubs.usgs.gov/publication/pp55},
  note = {Source identifier: pp55}
}