@misc{indiciae0a887e9fae8c,
  title = {Spirit leveling in California, 1896-1923: 39 degrees to 40 degrees latitude, 121 degrees to 122 degrees longitude},
  author = {Claude Hale Birdseye},
  year = {1925},
  doi = {10.3133/b766ss},
  url = {https://pubs.usgs.gov/publication/b766SS},
  note = {Source identifier: b766SS}
}