caption: The image shows an open book with a black background and a picture of a treatise of the plague on the cover page. The text on the book is visible, and the picture is of a man in a suit and tie, with a stern expression on his face. He is wearing a long coat of arms and a hat, and is holding a sword in one hand and a shield in the other. The title of the treatise is written in bold, white lettering across the top of the page.