Albumen photograph, 6.75 x 8.5 in., on 7.75 x 9.75 in. trimmed mount, displaying members of the 7th Delaware Battery encamped at Fort Barry, a federal artillery depot and instructional camp. Penciled caption on mount below image reads, "Camp Barry / 7th Del. Battery / Washington, DC 1863." The presence of conical Sibley tents suggests that the photograph was taken in the spring of 1863, once the wooden barracks had been disassembled from winter.