@misc{indiciae1cb6650f0d5c,
  title = {Administrative planning map of the United States: Fifteen minute quadrangle subdivisions},
  author = {U.S. Geological Survey and U.S. Coast and Geodetic Survey},
  year = {1933},
  doi = {10.3133/70278390},
  url = {https://pubs.usgs.gov/publication/70278390},
  note = {Source identifier: 70278390}
}