Wet plate, albumen carte de visite photograph, mounted to 2 3/4 x 4 1/8 card. Excellent view of an octagon house in Arlington, Va., that was used as the headquarters of General Irvin McDowell in the early summer of 1862. Three Union soldiers can be seen standing on the front porch. A ladder can be seen leaning against the cupola at top of the house which was used as an observation post. Card is trimmed. No backmark, but this is most likely a Mathew Brady view. Sharp image. This view is published in The Image of War; The Guns of '62. Rare.