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:
Minnesota, 1941. "Complete sanitary privy properly protected to prevent flies from spreading diseases. Concrete floor slab, riser stool and building are fabricated at central yard for environmental sanitation program." View full size. Medium format safety negative by Shipman for the Farm Security Administration.