Over eighty letters in Welsh, 1862-1864, from Corporal John Griffith Jones (1843-1864; born at Penisa'r-waun, Caernarvonshire), 23rd Regiment, Wisconsin Volunteers, to his family in Beaver Dam, Wisconsin, relating his experiences as a soldier with the Union Army during the American Civil War (see Y Casglwr, 33 (1987), 13 and Y Cyfaill o'r Hen Wlad, 28 (1865), 27). Also included are five letters, 1862-1872, from his fellow soldiers to his family; two letters, 1863-1864, to him from his mother, Mary Jones, and his grandfather John Jones, Llanrug, Caernarvonshire; and two letters, 1860-1865, from his grandfather to his father Richard M. Jones. A photograph of Corporal Jones in uniform, purchased with the letters, has been transferred to the Department of Pictures and Maps and a reproduction placed with the letters.