@misc{indiciaec73cc7b92499,
  title = {Thirteenth annual report of the United States Geological Survey to the Secretary of the Interior, 1891-1892: Part 1. Report of the director},
  author = {J. W. Powell},
  year = {1892},
  doi = {10.3133/ar13\_1},
  url = {https://pubs.usgs.gov/publication/ar13\_1},
  note = {Source identifier: ar13\_1}
}