Hi all,
I've been attempting to get my head around Wikidata and how
Wikisource-works' data is stored there, and have made a simple little
search thingo:
https://tools.wmflabs.org/ws-search/
It just searches title and author at the moment, but I'm going to extend
it for dates, genres/subjects, and other properties. There are also
plenty of ways in which it's not quite working properly at the moment,
I'm sure. :-)
—Sam.