Newly Found Pictures of Second Lincoln Inauguration

I heard this story on National Public Radio and found it delightful. The Library of Congress had, through misreading somewhat illegible hand-written logs in the 1940s, misfiled some pictures of Abraham Lincoln's second inaugural. The Library put its photos and other images online recently, and a research found the mistake. The story link has some of the images, and full-sized ones are available there for the download.