@misc{indiciae4dfa80bec275,
  title = {Geologic map of the Pickett Peak quadrangle, Trinity County, California},
  author = {William P. Irwin and M. Clark Blake and C. G. Cunningham},
  year = {1974},
  doi = {10.3133/gq1111},
  url = {https://pubs.usgs.gov/publication/gq1111},
  note = {Source identifier: gq1111}
}