Recently there was quite a bit of talk on Wikipedia as authority file, which then drifted to the topic of linking Wikipedia and library metadata. Additionally, Ed Summers pointed to Jakob Voss’ 2005 article “Metadata with Personendaten and beyond” which explains in some detail how authority data (control numbers) from the German National Library are added to Wikipedia articles. Wikipedia user APPER created several very useful tools for this task. So, given that the German-speaking community has these tools, I thought I’d take a look at how they are implemented in library union catalogs (these examples don’t claim to be complete).
The German National Library authority record provides a link (but not in the display for an individual title):
SWB union catalog shows a link to the Wikipedia article on the title level (as well as in the authority record):
The Austrian union catalog (into which I currently catalog) implements APPER’s control number look-up script into the title view with a preview of the Wikipedia article (Primo discovery system):
You decide which is the most elegant solution ;)… It would be great if for subjects matches could be found between library subject authority data and the corresponding Wikipedia articles and the same enriching could take place, because often the terms are closer to real-world expressions than the sometimes convoluted subject authorities. It seems that efforts to that effect are already underway: