Creighton University

Each delicate card includes a sliding panel that replaces the four layers of the original picture with four new layers making up an alternative picture.  Bertrand noticed that I did not understand how my first card, bought in '15, worked.  I am still hesitant to dismantle that card to bring it back to its original state.  Almost all of the fifteen further cards that he found for me are in good working order.  I have made a short Youtube video to illustrate how each card works: https://youtu.be/UKmo_YkcsEI.  I went out onto the web to see what I could learn about these cards and, though Guérin-Boutron made a wealth of different cards, I could find only two references to this form.  Both of those references are to our collection!  I present the last of these cards below in both its first and its second scene.  I also include one verso.