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:
December 1942. Proviso Yard, Chicago & North Western R.R. "A train, or 'cut,' being pushed out of a receiving yard toward the hump. A brakeman rides each train to signal the engineer in the locomotive at the rear." View full size. 4x5 Kodachrome transparency by Jack Delano, Office of War Information.