Correspondence between Coolidge and his sister, chiefly while he was serving with Maj. Gen. Ambrose E. Burnside's coast division, and in Burnside's bodyguard and at headquarters, Dept. of the Ohio. Includes descriptions of battles at Roanoke Island and New Bern, N.C., and Fredericksburg, Va., military life, and the cities of Annapolis, Md., New Bern, N.C., and Cincinnati, Ohio. Includes references to Burnside, Elias Howe, and Edward Stanly, to his marital problems, former alcoholism, and to spiritualism, prejudice agains blacks and Irish, and nativist attitudes. Also included are military records pertaining to leave, pay, and discharge; and newspaper clippings.