Headquarters of First Brigade Horse Artillery, =L.=7157, =L.=7590, =L.=7634, =L.=7637. =Headquarters Third Army Corps:= ---- quarters of Colonel Howard, chief quartermaster, =L.=7277. ---- quarters of Captain Bates, =S.=133, =S.=137. A regimental winter headquarters, =L.=7309. Headquarters Fifth Army Corps, officers' quarters, =L.=7158. Headquarters Third Division, Cavalry Corps, =L.=7638. Sutler's tent, First Brigade Horse Artillery, =L.=7164, =L.=7165, =L.=7496. Field hospital of First Division, Second Corps, =L.=7301. Field hospital of Second Division, Second Corps, =L.=7305, =L.=7306. Field hospital of Third Division, Second Corps, =L.=7146, =L.=7632. Mail-wagon of Second Army Corps, =L.=7303. =Camp of United States Engineer Battalion, March, 1864:= ---- general views of camp, =L.=7310, =L.=7433, =L.=7560. ---- headquarters, =L.=7097. ---- officers' quarters, =L.=7109. ---- quarters of Co. D, =L.=7005. Camp of Eighteenth Pennsylvania Cavalry, =L.=7650. Camp of One Hundred and Fourteenth Pennsylvania Infantry, =L.=7308, =L.=7612. Guard mounting of One Hundred and Fourteenth Pennsylvania Infantry, =L.=7613, =S.=134, =S.=135. Camp of Sixth New York Artillery, =L.=7265. =Camp of Fiftieth New York Engineers, near Rappahannock Station, March, 1864,--Winter Camp:= ---- winter camp, general view, =L.=7461, =L.=7276, =L.=7276, =S.=138. ---- stockade entrance, =L.=7351. ---- sutler's hut, =L.=7290. ---- quarters of field and staff =L.=7293, =L.=7604, =L.=7608. ---- quarters of line officers, =L.=7614. General Meade, General Sedgwick, and staff officers, at headquarters Horse Artillery Brigade, =L.=7618, =S.=1228. Major William Riddle and group, at headquarters Army of Potomac, =S.=139. General Rufus Ingalls and other officers, at headquarters Army of Potomac, =L.=7497, =L.=7610. A dinner party at headquarters Army of Potomac, =S.=132, =S.=140. General Judson Kilpatrick and staff, Stevensburg, Va., =L.=7224, =L.=7516. Captain J. M. Robertson and staff, First Brigade Horse Artillery, =L.=7555, =L.=7589. Provost-marshals of Third Corps, =L.=7088, =L.=7402. Colonel Sharpe and officers of Secret Service Department, headquarters Army of Potomac, =L.=7202. Scouts and guides of Army of Potomac, =L.=7105, =L.=7294, =L.=7599. Clerks at headquarters Army of Potomac, =L.=7184. Clerks in provost-marshal's office at headquarters Army of Potomac, =L.=7130, =L.=7291. Canvas pontoon wagon, =L.=7128, =L.=7272. Canvas pontoon boat, =L.=7273. Pontoon wagon and boat (side view), =L.=7160, =L.=7181. Pontoon boat (front view), =L.=7074, =L.=7584. Pontoon boat (rear view), =L.=7585, =L.=7586. Ordnance train of Third Division, Cavalry Corps, =L.=7640. Military Telegraph Construction Corps, =L.=7117. Wagon park, near Brandy Station, =L.=7268. * * * * * ARMY OF POTOMAC. MAY, 1864, TO JUNE, 1864. _Wilderness Campaign._