Washington, D.C. Officers of the U.S. Treasury Battalion; uncompleted Washington Monument in left background.

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Washington, D.C. Officers of the U.S. Treasury Battalion; uncompleted Washington Monument in left background. LOC Summary: Photograph of Washington, 1862-1865, view of the defenses of Washington. Date Created/Published: 1865 April. Civil War soldier pics provided by LOC. Original medium: 1 negative : glass, wet collodion.