Add to ORKGbuilding in Richmond, Virginia, to be utilized as a prison by the Confederacy. The first battle at Manassas produced many prisoners, a good portion of whom were hastily thrust into Mr. Ligon's warehouse. A number of covers exist from Ligon's Prison. In my recent book, Prisoners' Mail from the American Civil War, I indicated 34 covers either to or from Ligon's had been reported.1 Since that book went to press, an additional cover has come to light. That cover is the subject of this article. First a little background. It is probably safe to assume most people interested in Civil War history are familiar with Clara Barton, founder of the American Red Cross. While certainly not so well known as Clara, other members of the Ba...