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:
June 1942. "Eight units in generator hall of a new addition to TVA's hydroelectric plant at Wilson Dam, Sheffield vicinity, Alabama." Much, if not most, of the energy from the huge Tennessee Valley Authority hydroelectric projects undertaken during the war was used to run the uranium enrichment plants at the government's secret atom-bomb facility in Oak Ridge. View full size. 4x5 Kodachrome transparency by Alfred Palmer for the Office of War Information.