@misc{indiciaec30284844222,
  title = {Spirit leveling in California, 1896-1923: 38 degrees to 39 degrees latitude, 118 degrees to 119 degrees longitude},
  author = {Claude Hale Birdseye},
  year = {1925},
  doi = {10.3133/b766ll},
  url = {https://pubs.usgs.gov/publication/b766LL},
  note = {Source identifier: b766LL}
}