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:
Washington, D.C., circa 1919. "Chesapeake & Potomac Telephone Co. equipment." More communications gear at what seems to be the Capitol. The box on the left bears the nameplates of Leeds & Northrup, Philadelphia, and Western Electric. Harris & Ewing Collection glass negative. View full size | The knobs.