@misc{indiciae3eae48a47241,
  title = {Copyright Record Book Class R Vol 50 PART 2; Renewal Numbers 49500-49999; 1949},
  year = {1949},
  url = {https://www.loc.gov/item/coprecbooks-0049791274A/},
  note = {Source identifier: coprecbooks-0049791274A}
}