The anniversary issue of the collection "Black Sea Region in the Middle Ages" contains the publication of notarial acts of the XIV-XV centuries, compiled in Kaffa and other cities of the Black Sea region. These are unique sources that allow you to highlight different sides of the history of the cities of Crimea and neighboring regions in this era. Notarial acts are published in Latin, the original language, with detailed regests and comments in Russian and Italian. Many documents of the Genoa State Archives are published for the first time.