[4] Cyril E. Black received secondary education at the American College of Sofia and then returned to the United States to attend Duke University.
[1] Black began teaching history at Princeton University in 1939 and went on leave of absence during World War II.
[1] Journalist Mark Foster Ethridge (1896–1981) was sent on several fact-finding missions from 1945 to 1947 by the U.S. State Department to several Balkan countries and also the Soviet Union.
[6] In autumn 1945 Black was in Bulgaria, Romania, and the Soviet Union as adviser to the Etheridge Mission that was sent to report on the implementation of the Yalta Declaration.
[10] Black was the co-author or co-editor of a number of monographs and collections concerning Russia and the Soviet Union, world politics, and the international legal order.