Jacob Kramer-Duffield at the Berkman Center explains the significance of Google’s new ability to search the copyright renewal notices for books published between 1923 and 1963. Publishers of those books had to file a renewal notice to hold on to their copyrights. It’s been very difficult to determine whether those notices were ever filed, so, when in doubt, we’ve assumed that they’re protected, even though most of them undoubtedly are not. This is known as the “orphaned works” problem.

But, thanks to a gargantuan effort by a whole bunch of people — thank you! — that information has been digitized and Google can search it. Google Book Search and The Open Content Alliance will use this list to provide open access to works that otherwise were kept out of the hands of the public because their copyright status just couldn’t be determined.

Project Gutenberg, The Universal Library Project, and the Distributed Proofreaders deserve a lot of credit, praise, and hosannahs for accomplishing this task. [Tags: open_access copyright google open_content_allilance project_guetnberg universal_library_project distributed_proofreaders ]