@misc{indiciae8f9b1b32f53f,
  title = {Map of Montana showing unconsolidated deposits in which wells yielding 250 gpm or more have been constructed, 1959},
  author = {Frank A. Swenson},
  year = {1959},
  doi = {10.3133/ofr59112},
  url = {https://pubs.usgs.gov/publication/ofr59112},
  note = {Source identifier: ofr59112}
}