caption: The image shows an open book with a drawing of a group of people on it, depicting the battle of Gettysburg. The book is titled "The Rebel Assault on Fort Madison, the Fight Over the Devil" and is dated 1864. The people in the drawing are holding weapons and are engaged in a fierce battle, with some of them clashing with each other. The sky in the background is filled with clouds, adding to the intensity of the scene.