@misc{indiciae5674ade8c5f7,
  title = {Gold and silver conversion tables, giving the coining values of troy ounces of fine metal, and the weights of fine metal represented by given sums of United States money},
  author = {Albert Williams},
  year = {1883},
  doi = {10.3133/b2},
  url = {https://pubs.usgs.gov/publication/b2},
  note = {Source identifier: b2}
}