@misc{indiciaed8e44c8c55bd,
  title = {Eighth Annual report of the United States Geological Survey to the Secretary of the Interior, 1886-1887: Part 2},
  author = {J. W. Powell},
  year = {1889},
  doi = {10.3133/ar8\_2},
  url = {https://pubs.usgs.gov/publication/ar8\_2},
  note = {Source identifier: ar8\_2}
}