Researching northern Russia, I noticed this colour picture was captioned “Kem 1911”. 1911? The photographer turns out to have Sergei Mikhailovich Prokudin-Gorskii whose archive is in the Library of Congress:

Prokudin-Gorskii created his negatives by using a camera that exposed one oblong glass plate three times in rapid succession through three different color filters: blue, green, and red. For formal presentations, he printed positive glass slides of these negatives and projected them through a triple lens magic lantern. Prokudin-Gorskii would project the slide through the three lenses, and, with the use of color filters, superimpose the three exposures to form a full color image on a screen.