Most of the photos on this site were extracted from reference images (high-resolution tiffs, 20 to 200 megabytes in size) from the Library of Congress research archive. (To query the database click here.) Many were digitized by LOC contractors using a Sinar studio back. They are adjusted by your webmaster for contrast and color in Photoshop before being downsized and turned into the jpegs you see here.
1864. Chattanooga, Tennessee. "Boxcars and depot with Federal cavalry guard beyond. From photographs of the War in the West. Battle of Chattanooga, September-November 1863. Photograph probably taken the following year, when Chattanooga was the base for Sherman's Atlanta campaign." Wet plate glass negative, half of stereo pair, photographer unknown. View full size.