@misc{indiciae26c4fa52d20b,
  title = {Geologic names of the United States through 1975},
  author = {Roger Warren Swanson and M.L. Hubert and G.W. Luttrell and V.M. Jussen},
  year = {1981},
  doi = {10.3133/b1535},
  url = {https://pubs.usgs.gov/publication/b1535},
  note = {Source identifier: b1535}
}