@misc{indiciae559533837e3f,
  title = {Map showing potential sources of sand, gravel, and quarry rock, Port Townsend quadrangle, Washington},
  author = {D. P. Dethier and S. A. Safioles},
  year = {1983},
  doi = {10.3133/i1198b},
  url = {https://pubs.usgs.gov/publication/i1198B},
  note = {Source identifier: i1198B}
}