@misc{indiciaeb5e210e1ee62,
  title = {Mineral resources of the United States, 1889 and 1890},
  author = {David T. Day},
  year = {1892},
  doi = {10.3133/70175764},
  url = {https://pubs.usgs.gov/publication/70175764},
  note = {Source identifier: 70175764}
}