I have recently come across this unusual website: The Visual Telling of Stories
Navigation around the site is unconventional - I wouldn't be surprised if there weren't more things Ladybird than I've uncovered. My favourite part so far is the 'feature' on The Nurse, which allows you to click around and zoom in the images:
If there's more that I've missed, let me know.
Austalian Nicole has started a new project intending to catalogue as many different variations on Ladybird Book covers as she is able to. This is certainly a project to keep an eye on especially if you are interested in the different styles of Ladybird cover and Foreign language Ladybird Books.