@misc{indiciae08121b6c67e0,
  title = {Copyright Record Book Class R Vol 21 PART 2; Renewal Numbers 20500-20999; 1947},
  year = {1947},
  url = {https://www.loc.gov/item/coprecbooks-00497889777/},
  note = {Source identifier: coprecbooks-00497889777}
}