Image ID: AGIZ

MOLLUS Collection says: US Frigate Pensacola, at Alexandria, Virginia, 16 Nov 1861, visit of President Abraham Lincoln.

University of Maryland, Baltimore County: Pensacola was a Union ship of a type referred to as a screw sloop or a propeller-driven sloop-of-war. Served with the West Gulf Blockading Squadron. Image shows sailors manning the yards.

Library of Congress says: U.S. frigate Pensacola off Alexandria, Virginia.

Most available prints are from reduction copy negatives, reducing the originals to album card (or faux stereo card) size.