I knew of the photographic project that Nicholas funded and had seen some black-and-white prints, but I had never seen the results published in color. Amazing.
If I understood the text of the link correctly, though, the color technology Prokudin-Girskii invented produced color projections at the time but not color prints. Color prints apparently had to wait for digital processing technology.
Thank you, Major, for pointing out this website.
(This whole topic raises another interesting point. People in the West often assume that pre-revolutionary Russia lagged behind the West in technological development. In fact, Russia made many significant advances in science and technology, often solving problems with a different approach than that taken in the West -- and often solving them as well or better. Some historians of science think Russia's advances have been under-recognized, in part, because the work was published in a Cyrillic alpabet and therefore more inaccessible to Western scientists than works in German or English, which dominated the Western science publications.)