@misc{indiciaedc640167fa1d,
  title = {Mineral resources of the United States, 1914: Part I - Metals},
  author = {Hiram Dryer McCaskey},
  year = {1916},
  doi = {10.3133/70175809},
  url = {https://pubs.usgs.gov/publication/70175809},
  note = {Source identifier: 70175809}
}