@misc{indiciaeb9ed7b4ec901,
  title = {Map of mines, prospects, and patented mining claims, and classification of mineral deposits in the Medicine Mountain 7 1/2 minute Quadrangle, Black Hills, South Dakota},
  author = {Ed DeWitt and D. P. Buscher and A.B. Wilson and T.M. Johnson},
  year = {1988},
  doi = {10.3133/ofr87261g},
  url = {https://pubs.usgs.gov/publication/ofr87261G},
  note = {Source identifier: ofr87261G}
}