Found in Military Records of Watertown, Mass. today Watertown's Military History Published in 1907 under the direction of a Committee representing the Sons of the American Revolution and Isaac B. Patten Post 81, Grand Army of the Republic Boston David Clapp & Son, Printers 291 Congress Street, 1907 p 223 Knapp, Charles P., served 2 years, 10 mos. 27 dys, b. Norton age 18, Private Co. A 39th Mass M.I. Oct 7, 1864 M.O. June 4, 1865 When looking through the book for other info, came across the above. Karin