@misc{indiciae4c42107b81e1,
  title = {Progress report on geologic study of the Crosby and Ironton area of the Cuyuna Range, Crow Wing County, Minnesota},
  author = {Robert Gordon Schmidt and Carl E. Dutton},
  year = {1952},
  doi = {10.3133/ofr52136},
  url = {https://pubs.usgs.gov/publication/ofr52136},
  note = {Source identifier: ofr52136}
}