Millions of historic images posted to Flickr
American academic Kalev Leetaru is creating a searchable database of 12 million historic copyright free images.
Already 2.6m images have been upload to Flickr all sourced from the 600 million books scanned by the Internet Archive.
The images loaded to date can be accessed via https://www.flickr.com/photos/internetarchivebookimages/with/14784850762/