@misc{indiciaeed32cde9f5d3,
  title = {Geology of the Straight Creek tunnel site, Clear Creek and Summit Counties, Colorado, and its predicted effect on tunnel construction},
  author = {Charles Sherwood Robinson and Fitzhugh T. Lee},
  year = {1962},
  doi = {10.3133/ofr62111},
  url = {https://pubs.usgs.gov/publication/ofr62111},
  note = {Source identifier: ofr62111}
}