"Great Soviet Encyclopedia (GE)" is a huge national project that was created and published in the USSR in 1926-1990. The encyclopedia consists of 65 volumes and was a source of comprehensive knowledge for readers in various fields of science and culture. It contains thousands of articles on history, culture, technology, science, geography, art, etc. GE was distinguished by the fact that it combined general scientific information with the ideological views of the communist regime. Also, the book was marked by a high level of scientific and editorial work, which is why it gained popularity not only among readers, but also among scientists and researchers. "Great Soviet Encyclopedia" is a unique heritage of the Soviet cultural space, which still remains a source of valuable information for lovers of science and history.