“Are You Helping to Liquidate Illiteracy? Everyone Join the ‘Down with Illiteracy’ Society.” Leningrad 1925. Source: Wikimedia Commons, https://commons.wikimedia.org/wiki/File:%D0%A2%D1%8B_%D0%BF%D0%BE%D0%BC%D0%BE%D0%B3%D0%B0%D0%B5%D1%88%D1%8C_%D0%BB%D0%B8%D0%BA%D0%B2%D0%B8%D0%B4%D0%B8%D1%80%D0%BE%D0%B2%D0%B0%D1%82%D1%8C_%D0%BD%D0%B5%D0%B3%D1%80%D0%B0%D0%BC%D0%BE%D1%82%D0%BD%D0%BE%D1%81%D1%82%D1%8C.jpg [08.10.2025]
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