Анотація:
This paper is dedicated to the 100th anniversary of Omeljan Pritsak who was a famous historian on the Khazars and Ancient Rus’ studies. O. Pritsak inherited the traditions of Ukrainian history science, formed by M. S. Grushevsky and academician A. Krymsky. Some works of O. Pritsak are of special interest, because are dedicated to the origin of the term Rus’ and the content of the Kievan Letter.