The Library of Congress announced last week that it has made a huge collection of Civil War portraits available on its Flickr site. The portraits — almost 700 of them — are available at http://www.flickr.com/photos/library_of_congress/sets/72157625520211184. This collection is all from one place — the Liljenquist family — and includes the frames of the pictures as well as the ambrotype and tintype photographs themselves. Many of the pictures are soldiers (including some portraits of African-American soldiers) but there are some civilian pictures here as well. There are also many group pictures, both of civilians and soldiers. Some of the pictures are...