And this was the Civil War version of the media office in which officers were given a glimpse of the photos taken in and around camp.
This is a photograph of Mathew Brady himself. It was taken after the first Bull Run battle. Notice the saber given to him by the New York Fire Zouaves.
Photography was in it's infancy during the Civil War. This photograph depicts the photographic wagon used by the renown Mathew Brady. Notice the size of the wagon (it's the equivalent to a camera bag today). All this was necessary to take photographs in the 19th century.