@misc{indiciae2efc81fa780d,
  title = {Gold placer mining developments in the Innoko-Iditarod region},
  author = {A.G. Maddren},
  year = {1911},
  doi = {10.3133/b480i},
  url = {https://pubs.usgs.gov/publication/b480I},
  note = {Source identifier: b480I}
}