@misc{indiciae50123004c656,
  title = {Photogeologic and reconnaissance geologic map of the Miles City Creek Quadrangle, Custer County, Montana},
  author = {S. J. Luft and E.L. Heffern},
  year = {1987},
  doi = {10.3133/mf1968},
  url = {https://pubs.usgs.gov/publication/mf1968},
  note = {Source identifier: mf1968}
}