I noticed a brief description of this prison in a recent listing. For those wishing more information, there are three books on the subject: "Narrative of Prison Life at Baltimore and Johnson's Island, Ohio" 1917. By Shepherd, Henry E, M.A., LLD "Ohio's Military Prisons in the Civil War," 1964. By Shriver, Phillip R. & Breen, Donald J. "Yankee Rebel, The Civil War Journal of Edmund DeWitt Patterson." By Patterson, Edmund DeWitt, 1866 I found them very informative. Bob