@misc{indiciaefafea027416c,
  title = {CDC 6600 control cards, Chippewa operating system, KAFB Computing Center},
  author = {J.B. Peterson},
  year = {1969},
  doi = {10.3133/ofr69203},
  url = {https://pubs.usgs.gov/publication/ofr69203},
  note = {Source identifier: ofr69203}
}