@misc{indiciae98ba81903df0,
  title = {Three preliminary aeromagnetic maps of eastern St. Louis County, Minnesota},
  author = {J. L. Meuschke},
  year = {1950},
  doi = {10.3133/ofr5048},
  url = {https://pubs.usgs.gov/publication/ofr5048},
  note = {Source identifier: ofr5048}
}