Советская Военная Энциклоредия [Sovetskai͡a Voennai͡a Ėnt͡siklopedii͡a] (Moscow: Voennoe Izdatl'stvo, 1977), s.v. "Казаков Михаил Ильич" ["Kazakov Mikhail Il'ich"] and "Казанская Операция 1918" ["Kazabskai͡a Operat͡sii͡a 1918"], Vol.4, p.28. Russian language reference (extract, photocopy).
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Collection Citation:
Russian Aeronautical Collection, ACC. 2006-0034, National Air and Space Museum, Smithsonian Institution.
