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:
Detroit circa 1902. "Photochrom Company building, side view." In the early 20th century, the Photochrom chromolithography process was licensed by William Henry Jackson and his partners to make millions of color postcards from the black-and-white Detroit Publishing glass negatives (like this one) seen here on Shorpy. The lot next door was a good spot for pickup ballgames. View full size.