@misc{indiciae589d0820a0a1,
  title = {The Koyukuk-Chandalar gold region},
  author = {A.G. Maddren},
  year = {1910},
  doi = {10.3133/b442g},
  url = {https://pubs.usgs.gov/publication/b442G},
  note = {Source identifier: b442G}
}