On the Defense of Castles and the Engines of Warfare

Beige-colored paper with creases from being folded. Black ink drawings of medieval stone and mortar fortifications with pointed roofs and conical roofs. The drawing takes up the center of the document, with writing in black ink on either side, filling the page vertically. Two small red seals, one on the top right of the document and one on a fold on the right edge.