Hat tip to Ad Orientem: Rare Color Photographs of Czarist Russia:
The Library of Congress has a display of photographs taken by the royal photographer of Czar St. Nicholas II online. Sergei Mikhailovich Prokudin-Gorskii was given special funding and transportation by the Czar, including a private train, with the commission to create a photographic record of his vast empire.
But when we see them in colour, kids look like real kids:
Back in those days colour photographs were taken only by professionals, and were expensive. They were only used rarely, for book illustrations and things like that, because of the cost. A special camera was used, which took three negatives either simultaneously or in quick succession, through red, green and blue filters. These could then be projected on a screen through filters (rather like early video projectors, which had separate red, green and blue lenses), but were usually used for making colour plates for books.
It was only after the First World War that colour film became available for amateur use. At first there were many different processes. Some were additive (red+green+blue), like Dufaycolor (one can see a lot of them in 1930s National Geographic magazines). These had the filters built into the film -- OK for large format negatives, but the pattern of the filters was intrusive in 35mm film, rather like an enlarged 0.5 megapixel photo today. So subtractive processes, like Kodachrome and Kodacolor, were developed in the 1930s and 1940s, where the silver in the image was replaced by coloured dyes in the development process. The problem with this is that dyes fade, so a lot of old colour negatives and slides have faded and lost much of their original colour.
But Prokudin-Gorskii used a camara that made colour-separations with three negatives, using silver, not dyes, and, by using digital techniques, the colour is as fresh as the day the pictures were taken. And so we can see Edwardian (well, actually Nikolaivian) pictures showing what the people really looked like a century ago.
It's a fascinating collection, and you can see more here.