It sounds unspectacular at first... but think about it. What's the earliest use of color photography that you can think of? The 1960's?
This dude came out and was doing it as early as 1909. He worked in a train car that was modified to act as a dark room.
Most kids these days (including me) can't quite imagine what life was like from a black & white photograph. When we're young, we think that life actually was B&W back then. But this gallery is such a great perspective, showing the vibrant and brilliant colors from 100 years ago that have never before been recorded.