@misc{indiciaefd39f0a0f13a,
  title = {Five preliminary aeromagnetic maps of Pottsville and vicinity, Mullan and vicinity, Wallace and vicinity, Smelterville and vicinity, and Kellogg and vicinity, all in the Coeur d'Alene mining district, Idaho},
  author = {William J. Dempsey},
  year = {1950},
  doi = {10.3133/ofr508},
  url = {https://pubs.usgs.gov/publication/ofr508},
  note = {Source identifier: ofr508}
}