Virtual Card Catalog

U.S. Copyright Office

Original source linkedPublic proof-of-concept interface for 1870–1977 catalog cards.

What this source shows

Browse scanned images of 41.5 million catalog cards indexing copyright registrations and ownership transfers from 1870-1977. Proof of concept; cards may contain errors.

Rights and reuse: Index access does not confer permission to reproduce underlying works.
Access: Public proof-of-concept interface for 1870–1977 catalog cards.

Open original source ↗

Why it matters

Registration and transfer history for pre-1978 work sits on these cards, which is where an older rights trail starts.

Where this series uses it

No edition or tool links to this record yet. It is part of the research behind the series.