I like this one. In the immediate JFK aftermath in Dealey Plaza with what appears to be someone filming ... Zapruder? ( http://en.wikipedia.org/wiki/Zapruder_film ) ~ http://images.google.com/hosted/life/l?imgurl=63197f2608eaa0...

Amazing picture.

That's The Grassy Knoll: http://en.wikipedia.org/wiki/Image:Grassy_Knoll_2003.jpg

Photos from 1750, are you really sure?

Take a look at these photos, they are from 1750s http://images.google.com/images?q=1750s&q=source%3Alife

Those are not photographs. "Le pittore antiche" means "Antique pictures" (not photography) and not even litography was invented before the 19th century.

I found this Time magazine cover from 2002 particularly interesting: http://bit.ly/17CJf

Apple and Jobs have changed a lot since then :-p.

For an even more extreme change, see: http://bit.ly/13h9T

A lot of these overlap with http://gettyimages.com (Editorial photos).