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Photo: Sergei Prokudin-Gorsky (U.S. Library of Congress)

Citations

[1] Sergey Prokudin-Gorsky - Wikipedia ➤ https://en.wikipedia.org/wiki/Sergey_Prokudin-Gorsky#Photography_technique[2] Sergey Prokudin-Gorsky - Wikipedia ➤ https://en.wikipedia.org/wiki/Sergey_Prokudin-Gorsky#/media/File:Rgb-compose-Alim_Khan.jpg[3] - Radio Free Europe / Radio Liberty ➤ https://www.rferl.org/p/7080.html