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:
Spuiwaterboot Canal in Rotterdam as seen from a bridge. One of a series of images taken in Europe in 1904 by an unknown photographer. Scanned from the nitrocellulose negative. View full size.