@misc{indiciae5998279ef4fe,
  title = {Ride the Rockies Postcard},
  author = {Members of the Engineering Geology and Ground Water Branches, U.S. Geological Survey},
  year = {2007},
  doi = {10.3133/gip51},
  url = {https://pubs.usgs.gov/publication/gip51},
  note = {Source identifier: gip51}
}