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| Signal tower at 14th New York Artillery H.Q. Signal tower at 14th New York Heavy Artillery headquarters Petersburg, Virginia. |
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| Aerial view of battlefield Aerial View of battlefield from signal tower, Petersburg, Virginia. |
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| Central Signal Station, Winder Building, D.C. Central Signal Station, Winder Building, 17th and E Streets NW, and Signal Corps men, Washington, D.C. April 1865. |
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| Col. Benjamin F. Fisher and staff, D.C. Col. Benjamin F. Fisher and staff on steps of Signal Corps headquarters, F St., NW, Washington, D.C. April 1865. |
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| Col. Benjamin F. Fisher Signal Corps H.Q. Col. Benjamin F. Fisher between two officers on steps of Signal Corps headquarters, 1816 F St., NW Avenue at Madison Place NW, Washington, D.C. May 1865. |
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| Officers on porch at Signal Corps H.Q. Officers and clerks on a porch at Signal Corps headquarters, Washington, D.C. May 1865. |
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| Sam A. Cooley, U.S. photographer Wagons and camera of Sam A. Cooley, U.S. photographer, Department of the South. |
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| Signal Corps officers with General Albert J. Myer Signal Corps officers lowering flag at their camp near Georgetown, General Albert J. Myer in civilian dress at right of pole, Washington, D.C. August 1864. |
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| Signal Tower at Cobb's Hill Signal Tower at Cobb's Hill near New Market, Virginia. 1864. |
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| U.S. Military telegraph operators U.S. Military telegraph operators at Petersburg, Virginia. |
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| View from signal tower, Petersburg, Va. View from signal tower at Petersburg, Virginia. 1863. |
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| Wagon train of Military Telegraph Corps Wagon train of Military Telegraph Corps, Richmond, Virginia. |
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