|Poster:||Alison OK||Date:||Aug 1, 2019 10:06am|
|Forum:||news||Subject:||BoingBoing: Data-mining reveals that 80% of books published 1924-63 never had their copyrights renewed and are now in the public domain|
But there's another source of public domain works: until the 1976 Copyright Act, US works were not copyrighted unless they were registered, and then they quickly became public domain unless that registration was renewed. The problem has been to figure out which of these works were in the public domain, because the US Copyright Office's records were not organized in a way that made it possible to easily cross-check a work with its registration and renewal.
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