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.
Clinton, Iowa. April 1943. "Chicago & North Western Railroad. Women wipers at the roundhouse cleaning one of the giant H-class locomotives." In the red bandanna: Marcella Hart, seen here in a few other posts. 4x5 Kodachrome transparency by Jack Delano for the Office of War Information. View full size.