@misc{indiciae62effec3c550,
  title = {Aeromagnetic map of parts of western Iron, southwestern Baraga, southern Houghton, southeastern Ontonagon, and northeastern Gogebic Counties, Michigan},
  author = {James R. Balsley and F.A. Petrafeso},
  year = {1965},
  doi = {10.3133/ofr6511},
  url = {https://pubs.usgs.gov/publication/ofr6511},
  note = {Source identifier: ofr6511}
}