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.
"Detroit Photographic Co. Special (William Henry Jackson seated at table in Delaware, Lackawanna & Western Railroad car)." I've been reading WHJ's autobiography, "Time Exposure," which he began in his tenth decade and completed in 1940, two years before his death at age 99. Highly recommended by Shorpy's Book Club. 8x10 inch dry plate glass negative. View full size.