Photoshop may be new to history, but messing with photos is nothing new! A new exhibit at the National Gallery of Art in Washington, D.C. traces the history of ‘fake’ photos since the beginning of photography (19th century). It runs from Feb 17-May , 2013.
This reminded me of an article I saw a while back that had lots of cool examples, including the famous one in the photo above, which is Lincoln’s head on John Calhoun’s body. Here’s a link to the article with lots of examples of photos: http://www.fourandsix.com/photo-tampering-history/