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:
November 1942. Bingham Canyon, Utah. "View of the Utah Copper Company open-pit mine works at Carr Fork, as seen from the railroad." Note the ore cars on the tracks into the pit. 4x5 Kodachrome transparency by Andreas Feininger for the Office of War Information. Library of Congress. View full size.