@misc{indiciae23443cd1c81e,
  title = {Puget Sound aeromagnetic maps and data},
  author = {Richard J. Blakely and Ray E. Wells and Craig S. Weaver},
  year = {1999},
  doi = {10.3133/ofr99514},
  url = {https://pubs.usgs.gov/publication/ofr99514},
  note = {Source identifier: ofr99514}
}