People Posing Around the USS Constitution as it is Being Overhauled at the Portsmouth Navy Yard in Kittery, Maine (1858)

People posing around the USS Constitution as it is being overhauled at the Portsmouth Navy Yard in Kittery, Maine, May 27, 1858. Believed to be the oldest known photograph of the USS Constitution. By Albert Gregory.

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View of the Washington Navy Yard With the Anacostia River in the Background in Washington, D.C. (1850)

View of the Washington Navy Yard with the Anacostia River in the background in Washington, D.C., July 1850. By the Langenheim brothers.

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Union Soldiers of the 71st Regiment New York State Militia in Square Formation at the Navy Yard (1861)

Union soldiers of the 71st RegimentNew York State Militia in square formation during drilling at the Navy Yard in Washington, D.C., c. 1861.

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Union Soldiers of the 12th New York Volunteer Infantry Regiment Posing Inside of a Barracks Building at the Navy Yard in Washington, D.C. (1861)

Union soldiers inside of a barracks building at the Navy Yard in Washington, D.C., c. 1861. Attributed to Alexander Gardner. Animated stereoview.

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