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:
1930. "The hen with the mechanical internal organs surprised visitors at the World's Poultry Congress in London by giving a brief lecture on how she utilized her food to make eggs. Prepared by the United States Department of Agriculture." Harris & Ewing Collection glass negative. View full size.