@misc{indiciaefa46ed1bc9ec,
  title = {Total intensity aeromagnetic and geologic map of west-central St. Louis County, Minnesota},
  author = {J. L. Meuschke and John R. Henderson},
  year = {1952},
  doi = {10.3133/gp95},
  url = {https://pubs.usgs.gov/publication/gp95},
  note = {Source identifier: gp95}
}