@misc{indiciae45a927767dff,
  title = {Aeromagnetic map of the Westcliffe-Royal Gorge area, Custer and Fremont Counties, Colorado},
  author = {Members of the Engineering Geology and Ground Water Branches, U.S. Geological Survey},
  year = {1979},
  doi = {10.3133/gp929},
  url = {https://pubs.usgs.gov/publication/gp929},
  note = {Source identifier: gp929}
}