I have many pictures to go with this device, and I've just started scanning them. Here's a sample:
I've put a few more on Flickr, and hope to add more over time. From those pictures that are dated and from the topics of others, it appears they are “fin de siècle” (Fr. "end of the century" [see also the previous post "French for Americans"]), taken in the late 19th or early 20th century.
It would be cool if there were a way to see these in 3D on the computer screen.