"Big Soviet Encyclopedia" is an encyclopedia that has become one of the symbols of the culture of the Soviet Union. The publication consists of 65 volumes and includes more than 100,000 articles from various fields of knowledge: history, science, culture, technology, geography, and others. Each volume is a valuable source of information about events, phenomena and personalities that were important for the history of the Soviet Union. The "Great Soviet Encyclopedia" was published in the period from 1926 to 1947 and is noted for its broad thematic coverage and high scientific quality. This encyclopedia is an important document of the cultural heritage of the Soviet Union and still retains its value for studying the history and culture of this period.