@misc{indiciae55a3d37fb02c,
  title = {Maps of the Gold Bug Mine Tunnels, the Ruby and Pink Eye Mines, the Ruby OK and Alabama Mines, and the Little Ben Mine, Little Rocky Mountains, Montana},
  author = {Gerald Francis Loughlin},
  year = {1955},
  doi = {10.3133/ofr5597},
  url = {https://pubs.usgs.gov/publication/ofr5597},
  note = {Source identifier: ofr5597}
}