@misc{indiciae06a3168891a2,
  title = {Copyright Record Book Class R Vol 58 PART 1; Renewal Numbers 57000-57499; 1950},
  year = {1950},
  url = {https://www.loc.gov/item/coprecbooks-0049791288A/},
  note = {Source identifier: coprecbooks-0049791288A}
}