@misc{indiciaea447648c04e4,
  title = {Geologic map of the Dodgeville quadrangle, Wisconsin},
  author = {John Wing Allingham},
  year = {1958},
  doi = {10.3133/ofr582},
  url = {https://pubs.usgs.gov/publication/ofr582},
  note = {Source identifier: ofr582}
}