Around a decade ago, George Eksts was digitizing a 19th-century photograph for the Victoria & Albert Museum, in London, when he turned it over and noticed that someone had doodled on the back. The front side showed an image of Kashmiri temple ruins, taken by the photographer Francis Frith. But on the reverse, rotated 90 degrees from the orientation of the photograph, were bizarre pencil portraits of a headless man, as well as a long-beaked creature with human legs. “There are lots of photographs in the collection, but not many…
