Recommend deprecating Worldcat links.

[Eric]

Because Worldcat has begun putting in critically disabling (imho) limits on use, and because IMSLP and Wikipedia pages often use - I am a culprit here - Worldcat/OCLC links as evidence that things exist - I would recommend going past the Worldcat page to one of the libraries that Worldcat usually points to and linking there instead, when and as possible, rather than using the WC template.