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:
1865. "Petersburg, Virginia. Sections of chevaux-de-frise before Confederate main works." From photographs of the main Eastern theater of war, the siege of Petersburg, June 1864-April 1865. Glass plate negative, left half of stereograph pair, from Civil War photos compiled by Milhollen and Mugridge. View full size.