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:
1956 Cal Poly Homecoming Parade, San Luis Obispo, Calif. The Soils Club float "A New Science." Shot by my brother on 35mm Ektachrome. View full size.