a great early Civil War CDV photo - Topo Engineer William S Rosecrans, full seated view, he wears a brigadier's uniform, eagle beltplate w applied wreath, epaulets; his extended telescope in one hand, he holds a partially unrolled map on his knees, a cavalry saber w knot at his side . Reverse w imprint "Published by E. Anthony, 501 Broadway, N.Y.". The image was made in June 1861 when he served on McClellan's Staff as Chief of Engineers during the West Virginia Campaign. Vg, w nice tones.