The ten most expensive photographs, ever

Bloomsbury Auctions is launching a photography department. That's a smart move–there's money in photos. Last year, one by Andreas Gursky, 99 Cent II Diptychon (below) sold for $3,346,456 at Sotheby's in London. Here's an interesting, illustrated list of the ten most expensive photographs to date. Mr. Gursky made the list twice.