They are looking for "new, inventive ways to navigate, find and display these 'unseen illustrations'." See this article: http://britishlibrary.typepad.co.uk/digital-scholarship/2013/12/a-million-first-steps.html
Cover makers may find this of particular interest. The images have been released into the Public Domain. Attribution would be appreciated but there is no obligation.We are looking to crowdsource information about what is depicted in the images themselves, as well as using analytical methods to interpret them as a whole.
Ruth