Quote from full announcement
http://britishlibrary.typepad.co.uk/digital-scholarship/2013/12/a-million-f…
We have released over a million
images<http://www.flickr.com/photos/britishlibrary>onto Flickr Commons
for anyone to use, remix and repurpose. These images
were taken from the pages of 17th, 18th and 19th
century books digitised
by
Microsoft<http://pressandpolicy.bl.uk/Press-Releases/The-British-Library-19th-Century-Book-Digitisation-Project-343.aspx>who
then generously gifted the scanned images to us, allowing us to release
them back into the Public Domain. The images themselves cover a startling
mix of subjects: There are maps, geological diagrams, beautiful
illustrations, comical satire, illuminated and decorative letters,
colourful illustrations, landscapes, wall-paintings and so much more that
even we are not aware of.
Flickr account
http://www.flickr.com/photos/britishlibrary
Example of image
http://www.flickr.com/photos/britishlibrary/11307195524/
Example of all images from a book
http://www.flickr.com/photos/britishlibrary/tags/sysnum002660292
Stuff for coders
https://github.com/BL-Labs/imagedirectory
So... :-)