Photos by Prokudin-Gorskii
From the Library of Congress: “The Sergei Mikhailovich Prokudin-Gorskii Collection features color photographic surveys of the vast Russian Empire made between ca. 1905 and 1915…. An active photographer and scientist, Prokudin-Gorskii (1863-1944) undertook most of his ambitious color documentary project from 1909 to 1915.”