Catalog of Copyright Entries: Third series

The Catalog of Copyright Entries, Third Series, was produced by the United States Copyright Office within the Library of Congress, beginning in 1947. It served as a comprehensive, systematic public record of all works registered for copyright in the United States, replacing the earlier format of the series. The publication was designed to provide legal clarity and a searchable history for authors, publishers, and legal researchers by documenting books, periodicals, musical compositions, motion pictures, and other intellectual property assets.

The design of the catalog reflects the administrative rigor of the post-war federal government, prioritizing functional utility and archival permanence over aesthetic flair. Organized by class and type, the entries offer a meticulous snapshot of mid-twentieth-century American cultural production. Because these volumes were intended as primary source documents for legal deposit and copyright verification, they were distributed to major research institutions and libraries to ensure the preservation of the national literary and artistic record.