@misc{indiciaef03f8aa1d70a,
  title = {Geologic map of McGuffy Creek area, Siskiyou County, California},
  author = {J.S. Livermore and F.C. Gros and L. H. French},
  year = {1942},
  doi = {10.3133/ofr426},
  url = {https://pubs.usgs.gov/publication/ofr426},
  note = {Source identifier: ofr426}
}