"Big Soviet Encyclopedia" is a publication that became a monument of culture and science, published by the publishing house "Bolshaya Sovetskaya Encyclopedia" in 1926. This encyclopedia contains a huge amount of knowledge about the universe - from history and geography to medicine and technology. The book includes thousands of articles on a variety of topics, illustrated with maps, drawings, and photographs. Each article in the encyclopedia explains the topic in detail, provides interesting facts and important information. The "Great Soviet Encyclopedia" became not only a source of useful information for readers, but also a symbol of its era. The publication is of great importance for studying the history, culture and scientific achievements of the USSR. This encyclopedia became an integral part of the home library of many people and remains an important source of knowledge even now.