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:
August 1941. "One end of the Hull-Rust-Mahoning pit, largest open pit iron mine in the world, near Hibbing, Minnesota. The pit is two and a half miles long, three quarters of a mile wide and about four hundred feet deep." Medium format safety negative by John Vachon for the Farm Security Administration. View full size.