Photo Tampering Throughout History

The Stalin photo 4 from the top is also part of a museum exhibition about the endemic editing of history during his regime: The Commissar Vanishes

http://www.newseum.org/berlinwall/commissar_vanishes/

Here's a recent post on a NY Times blog regarding a cropped photgraph of Dick Cheney:

http://lens.blogs.nytimes.com/2009/09/17/essay-9/