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.
Vintage photos of:
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.