"Big Soviet Encyclopedia" is a well-known publication that was published in 65 volumes between 1926 and 1947. This is the largest publication of its kind in the Soviet Union, which contains a huge amount of knowledge from various fields of science, culture, history, geography and much more. The first volumes of the encyclopedia were published during the construction of socialism, and the last - during the Great Patriotic War. The "Great Soviet Encyclopedia" contained important information for all seekers of knowledge and a diverse reader. The book is an important source of information about the Soviet Union and the general world history of the 20th century.