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.
"Real Estate Exchange, Detroit." Shown around the time of its completion in 1918, this Gothic wedding cake of an office tower was known for most of its 58 years as the Cadillac Square Building. Detroit Publishing glass negative. View full size.