@misc{indiciae007ff8073cd1,
  title = {Aeromagnetic map of northwestern Dickinson County, Michigan},
  author = {James R. Balsley and Carl L. Long},
  year = {1965},
  doi = {10.3133/ofr659},
  url = {https://pubs.usgs.gov/publication/ofr659},
  note = {Source identifier: ofr659}
}