Ok, LOC is always cool for photographic stuff, but this is one of the coolest things I've seen so far: The Empire That Was Russia [http://www.loc.gov/exhibits/empire/]. As photographed by the Photographer to the Tsar, Sergei Mikhailovich Prokudin-Gorskii, with a kooky 3 lens camera shooting 3 images using red, green and blue filters respectively which he then projected using a 3 lens projector to simulate color. The LOC has recreated the color images digitally using his negatives. Check it out.

Interesting is that some of the shops and people "people at work" section look similar to what I saw in South/Central Asia in 1996/7 - not much seems to have changed in 100 years.