@misc{indiciaeb417cd23747a,
  title = {Base sheet generation for 1:24,000-scale maps},
  author = {J.E. Findley},
  year = {1993},
  doi = {10.3133/ofr93352},
  url = {https://pubs.usgs.gov/publication/ofr93352},
  note = {Source identifier: ofr93352}
}