Rock, Rock, Rock!

The film was released in 1956 and originally registered for copyright by Vanguard Productions, Inc. on December 5, 1956 (LP7361). Under the 1909 Copyright Act, works from this era required a renewal filing with the U.S. Copyright Office during the 28th year of their first term to maintain protection. For this film, the renewal window was open in 1984. A search of the Stanford Copyright Renewal Database, the U. Penn online Catalog of Copyright Entries, and the Film Superlist (Hurst) indicates that no renewal was ever filed for this title. Because the copyright was not renewed, the work entered the public domain in the United States at the end of its first 28-year term on December 31, 1984. The film's presence in numerous public domain DVD collections (such as those by Alpha Video) and its widespread availability on archive.org further support its public domain status. Note: generated without live web grounding (the grounded research engine was unavailable). Verify the cited sources independently before relying on this determination.