@misc{indiciae99e434634b63,
  title = {Aeromagnetic map of parts of northeastern Ontonagon, southern Houghton, and northwestern Baraga Counties, Michigan},
  author = {James R. Balsley and C. W. Smith},
  year = {1965},
  doi = {10.3133/ofr6513},
  url = {https://pubs.usgs.gov/publication/ofr6513},
  note = {Source identifier: ofr6513}
}