" Hdqrs. buildings occupied at various times since Oct. 1861. Building used as 4th. Headquarters Signal Corps at 1909 Penn. Ave. and in which no change has been made since occupied by from Oct. 1866 to Aug. 1868."

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Size: 8416px × 5711px
Photo credit: © piemags/NSC / Alamy / Afripics
License: Licensed
Model Released: No

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