Can Collaboration Solve Copyright Status Questions? The WorldCat Copyright Evidence Registry - As Roger V. Skalbeck documents, one of the underlying obstacles to reproducing older books is a central place to look for information about what is protected by copyright and what may have passed into the public domain is lacking. Responding to this need, OCLC recently introduced a beta service, the WorldCat Copyright Evidence Registry (CER). It could be a very valuable resource for recording and sharing copyright status information."