@misc{indiciae205145c15361,
  title = {Bouguer gravity anomaly map of the Glacier Peak Wilderness and vicinity, Chelan, Skagit, and Snohomish counties, Washington},
  author = {M.S. Sherrard and Vincent J. Flanigan},
  year = {1983},
  doi = {10.3133/ofr83595},
  url = {https://pubs.usgs.gov/publication/ofr83595},
  note = {Source identifier: ofr83595}
}