[kjell]

Here's an example torrent of metadata and images from the Rijksmuseum put together by an art history researcher: http://matthewlincoln.net/2015/10/19/the-rijksmuseum-as-bitt...

[ConceptJunkie]

I just finished downloading this this morning. I've been able to look through some of it so far and there's some really fascinating stuff.

I'm particularly interested in the paintings for use as wallpapers, but there are lots of printed materials dating back to the 17th century (and probably earlier).