While most of us know that some of the greatest treasures can be found in books, turns out that sometimes they also appear on the fore-edges of the pages. Recently Colleen Theisen shared a gif she made, showing an amazing example of fore-edge painting on the side of the book from 1873. The painting was found on the edge of Robert Mudie’s book Autumn at the Special Collections & University Archives at the University of Iowa. Fore-edge painting dates back to 1650′s, and is a technique when a picture is drawn on the edge of the book pages. Sometimes the image can be seen when the book is closed, sometimes the pages have to be slightly fanned out.