@misc{indiciae488231195e4e,
  title = {Artifact from deposits of mid-Wisconsin age in Illinois},
  author = {P.J. Munson and J.C. Frye},
  year = {1965},
  doi = {10.1126/science.150.3704.1722},
  url = {https://pubs.usgs.gov/publication/70010525},
  note = {Source identifier: 70010525}
}