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:
March 1943. "San Bernardino, California. Cars being precooled at the ice plant. Air at a temperature of 20 degrees Fahrenheit is blown through the cars for 20 minutes in one direction, then in the other. Shippers specify the number of hours precooling required for their product." Photo by Jack Delano. View full size.