Chiefly correspondence, orders, commissions, reports, and circulars concerning the organization and activities of Mosby's Rangers (43rd Virginia Cavalry Battalion, C.S.A.). Documents the guerrilla warfare carried out by the battalion in Virginia. Contains remarks on public enthusiasm for the war in 1861, the treatment of prisoners of war, casualties, the death of Maj. John Pelham, and the capture of Gen. Edwin H. Stoughton. Correspondents include Jubal Anderson Early, Joseph E. Johnston, Robert E. Lee, Henry E. Peyton, Alexander Hamilton Stephens, Jeb Stuart, and Mosby's wife, Pauline.