Between 1909 and 1912, photographer Sergei Prokudin-Gorskii was commissioned to conduct a photographic survey of the Russian Empire by Tsar Nicholas II. Using a special camera he captured three black and white images in fairly quick succession, using red, green and blue filters. These were later overlaid and projected with filtered lanterns to show near true colour images. These photographs pre-date both the Russian Revolution and the First World War. Take a step back in time and see what life was like for Muslims more than a century ago with these photos made available by the Library of Congress, which purchased the original glass plates back in 1948.