Vanishing fore-edge painting is a traditional English book art. This island really loves books and so do I! This unique art began in 10th century Europe. You can even get books that can be fanned multiple ways (forwards, backwards and diagonally) and there is a different painting on each, so 4 paintings on one book edge! Truly amazing.
There was also a niche tradition of painting ‘gentleman’s pictures’ on the edges of books, ie. paintings of nude ladies, of course… 😉
Revealing this conceit is like magic when you present it to people in real life. I’ll look into doing more for my PhD including hiding several paintings in one fore-edge, to be revealed depending on the way you fan the book! Exciting possibilities for the future ~