The "Great Soviet Encyclopedia" is a rare example of an information medium that was created during the Soviet Union. This encyclopedia is known for its huge number of articles on a variety of topics, ranging from history, geography and science to culture, art and sports. Each article is written with deep professionalism and contains comprehensive information about the topic. The "Great Soviet Encyclopedia" became an integral part of the home library of many families in the past and was considered an important source of knowledge for a wide audience. Today, this encyclopedia can be a valuable resource for historians, cultural studies, and anyone interested in the fascinating history of a bygone era. The inclusion in the encyclopedia of topics that are no longer relevant gives it a special historical flavor and interest for studying the development of science, technology and culture of the last century.