Caught this on the BBC News site; Millions of historic images posted to Flickr
An American academic is creating a searchable database of 12 million historic copyright-free images.Flickr link - Internet Archive Book Images
Kalev Leetaru has already uploaded 2.6 million pictures to Flickr, which are searchable thanks to tags that have been automatically added.
The photos and drawings are sourced from more than 600 million library book pages scanned in by the Internet Archive organisation.
Visitors to the site are free to copy and make use of the pictures without charge.
"Most of the images that are in the books are not in any of the art galleries of the world - the original copies have long ago been lost."
The pictures range from 1500 to 1922, when copyright restrictions kick in.
The project has resulted in even more pictures of cats being put on to the internet.