@misc{indiciae39eae83d866d,
  title = {Zinc and lead deposits of the Sinsinawa River area, Grant County, Wisconsin},
  author = {John W. Allingham and Arthur E. Flint and Allen F. Agnew},
  year = {1955},
  doi = {10.3133/mf40},
  url = {https://pubs.usgs.gov/publication/mf40},
  note = {Source identifier: mf40}
}