TY - RPRT TI - Spirit leveling in California, 1896-1923: 41 degrees to 42 degrees latitude, 123 degrees to 124 degrees longitude AU - Claude Hale Birdseye PY - 1925 DO - 10.3133/b766zz UR - https://pubs.usgs.gov/publication/b766ZZ ID - b766ZZ ER -