@misc{indiciae6967a2d21977,
  title = {Aeromagnetic map of the Willapa quadrangle, Pacific County, Washington},
  author = {John R. Henderson and Natalie S. Tyson and E.F. McGowan},
  year = {1958},
  doi = {10.3133/gp185},
  url = {https://pubs.usgs.gov/publication/gp185},
  note = {Source identifier: gp185}
}