The story of Russian chemist and photographer Sergei Mikhailovich Prokudin-Gorskii, who "travelled in a special train car transformed into a dark room to process his special process of creating color images" in the years 1909-1915, was unknown to me before I visited the Denver Post blog site, even though these have been up for nine months (both these and the pre-WWII America images are posted with dozens of ways to share), but it's a very nice Library of Congress collection depicting the Mother Russia of VN's childhood... http://blogs.denverpost.com/captured/2009/10/21/color-photography-from-russian-in-the-early-1900s/
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