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.
Circa 1900. "Mrs. Mary Surratt house at 604 H Street N.W., Washington." Boardinghouse owned by Mary Surratt where the Lincoln conspirators are said to have plotted the abduction of the President in 1865. Brady-Handy Photograph Collection glass negative, Library of Congress. View full size.