AMMEN, DANIEL, Union Admiral. Autograph letter signed, Washington, D.C. 17 July 1878. 2 pages, 4to, slight browning along folds. A letter on domestic issues from this Civil War Navyman. As a captain, Ammen was attached to the U.S. Coast Survey and commanded the steamer Seneca. He was involved in the battle of Port Royal and the attack on Fort Sumter. He suppressed a mutiny aboard the Ocean Queen and was commander of the steam sloop Mohican at both attacks on Fort Fisher.