@misc{indiciae133ff39b3001,
  title = {Digital orthophoto quadrangles},
  author = {Members of the Engineering Geology and Ground Water Branches, U.S. Geological Survey},
  year = {2000},
  doi = {10.3133/fs03900},
  url = {https://pubs.usgs.gov/publication/fs03900},
  note = {Source identifier: fs03900}
}