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:

Pensacola, Florida, circa 1910. "Palafox Street, American National Bank Building." 8x10 inch dry plate glass negative, Detroit Publishing Company. View full size.

Spring 1942. "New Bedford, Massachusetts. Portuguese Girl Scouts." Medium format negative by John Collier, Office of War Information. View full size.

January 1938. "Front of livery stable, East Side, New York City." 35mm nitrate negative by Russell Lee for the Farm Security Administration. View full size.

April 1943. Clinton, Iowa. "Mrs. Irene Bracker, mother of two, employed at the roundhouse as a wiper, Chicago & North Western R.R." 4x5 Kodachrome transparency by Jack Delano for the Office of War Information. View full size.

New York circa 1919. The Metropolitan Opera soprano Rosa Ponselle, pensive. 5x7 glass negative, George Grantham Bain Collection. View full size.

Circa 1905. "Court and Chenango streets, Binghamton, New York." The Kilmer Building center stage. 8x10 glass negative, Detroit Publishing Co. View full size.

Sault Sainte Marie, Michigan, circa 1908. "Diver repairing a lock gate." Detroit Publishing Company glass negative. View full size.