BAKER, General L.C. History of the United States Secret Service. Philadelphia, 1867. -- SARMIENTO, F.L. Life of Pauline Cushman: The Celebrated Union Spy and Scout. Philadelphia, n.d. -- PITTENGER, William. Capturing a Locomotive: A History of the Secret Service in the Late War. Washington, DC, 1881. -- PITTENGER, William. Capturing a Locomotive: A History of the Secret Service in the Late War. Washington, DC, 1905. 2 copies. -- BAKER, Lafayette C. The United States Secret Service in the Late War. Chicago, 1900. -- BAKER, Lafayette C. The United States Secret Service in the Late War. Portland, 1889. --BOYD, Belle. Belle Boyd in Camp and Prison, written by herself. New York, 1867. -- The Great American Scout and Spy, "General Bunker." New York, 1868. -- SMITH, George Gardner, ed. Spencer Kellogg Brown. His life in Kansas and his Death as a Spy. New York, 1903. -- KERBEY, J.O. The Boy Spy. Chicago, 1889. -- BULLOCH, James D. The Secret Service of the Confederate States in Europe. New York, 1959. Vols. I-II. -- PINKERTON, Allan. The Spy of the Rebellion. New York, 1883. -- SIGAUD, Louis A. Belle Boyd. Confederate Spy. Richmond, VA, 1944. -- RICHARDSON, Albert D. The Field, Dungeon, and Escape. Washington, 1897. 2 copies. -- And 2 others. 

Together, approx. 18 volumes, all ca 19th-20th century, most in original bindings, condition generally fair to good.