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:
1912. "Post Office Department. Hupp Auto Railway Service" (i.e., Hupp Automatic Mail Exchange, a system for transferring mail bags to and from a moving train). Harris & Ewing Collection glass negative. Note the two utility poles at left that have been scratched off the negative. View full size.