This is a vintage sepia-toned portrait photograph of Samuel L. Clemens, better known as Mark Twain. He is depicted from the chest up, turned slightly to the left. He has a full, bushy mustache and curly, somewhat disheveled hair. He is wearing a light-colored, possibly white, jacket or coat with a high collar. His expression is serious and contemplative. Below the photograph, there is handwritten text in elegant script that reads: 'Samuel L. Clemens (Mark Twain)'. The photograph is bordered by a thin red line. The overall aesthetic is that of a classic 19th-century portrait.