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.
March 1943. "Summit, California (vicinity). Passing an eastbound passenger train, the Chief, while coming down the mountain on the Atchison, Topeka & Santa Fe Railroad between Barstow and San Bernardino." Medium-format negative by Jack Delano for the Office of War Information. View full size.