@misc{indiciae14f9438c06af,
  title = {Geologic map of the Telegraph Peak 7.5-minute Quadrangle, San Bernardino County, California},
  author = {Douglas M. Morton and Michael O. Woodburne and Joseph F. Foster},
  year = {1991},
  doi = {10.3133/ofr90693},
  url = {https://pubs.usgs.gov/publication/ofr90693},
  note = {Source identifier: ofr90693}
}