@misc{indiciaecaf4f76a173f,
  title = {Looking for an old map},
  author = {Members of the Engineering Geology and Ground Water Branches, U.S. Geological Survey},
  year = {1996},
  doi = {10.3133/fs02494},
  url = {https://pubs.usgs.gov/publication/fs02494},
  note = {Source identifier: fs02494}
}