Professor of Ecumenical Theology, Drew University, New Jersey, USA (1956). From 1959 he was warden of St. Gregory and St. Macrina House, Oxford. With his wife Militza, With his parents, sisters and brother he wrote a memoir, Volume 1 "На переломе. Три поколения одной московской семьи (семейная хроника Зёрновых 1812-1921)" and volume 2 "За рубежом. Белград-Париж-Оксфорд. Хроника семьи Зёрновых, 1921-1972" : (1973); and in 1979 he published The Fellowship of St Alban and St Sergius: a historical memoir, to commemorate the 50th anniversary of the founding of the Fellowship. He died in Oxford on 25 August 1980. He bequeathed his library to the Library of Foreign Literature in Moscow. His wife died on February 4th,1994. Bibliography Some Figures Illustrating the Present State of the Eastern Orthodox Church (1935) Moscow the Third Rome (1937) (6 изданий, в том числе американское - в 1971 г.). St. Sergius Builder of Russia (1939), 155 p. (based on his Oxford D.Phil. thesis) The Church of the Eastern Christians (1942), 114 p. (with B. Vancura) The Bible in Russia and Czechoslovakia (1943?) Three Russian Prophets (Khomiakov, Dostoevsky, Soloviev) (1944), 171 pp. (Переиздано в США в 1974 г.) (With translations into Norwegian and Russian (Три русских пророка: Хомяков. Достоевский. Соловьев, 1955, 214 с.)). The Russians and their Church (London: S.P.C.K., 1945), 176 p. (Reprint 1954; revised 1964, 1968, 1978. Greek translation 1972, 1978). The Reintegration of the Church: A study in inter-communion (1952), 128 p. Вселенская Церковь и русское православие (1952) [I.e. 'The ecumenical Church and Russian Orthodoxy'] Содружество св. Албания и Преподобного Сергия Радонежского (1952), 3I5 с. Ruslands Kirke og Nordens Kirke (1954) [In Danish] (With translations into Swedish (Den Ortodoxa Kyrkan, 1955) and Finnish (Idan Ortodoksinen Kirkko, 1958)) The Christian East (The Eastern Orthodox Church and Indian Christianity) (1956), 138 p. Eastern Christendom: a Study of the Origin and Development of the Eastern Orthodox Church (1961), 326 p. (With translations into Italian (Il Cristianesimo Orientale,1962), Spanish (Cristianismo Oriental,1962) and Polish (Wschodnie Chrzescijanstwo, 1967)). Orthodox Encounter: the Christian East and the Ecumenical Movement (1961), 200 p. The Russian Religious Renaissance of the 20th Century (1963), 410 p. (With translations into Russian (Русское религиозное возрождение XX века, 1963; 2nd. ed. 1974) and Italian (1978)). (editor) Нa переломе: tri pocoleniia odnoi Moscovscai sem'i, semeinaia chronica Zernovych, 1812-1921 (1970), 478 с. (with M. V. Zernova) За рубежом: Белград - Париж - Оксфорд: Хроника семьи Зерновых (1921–1972) (1973), 561 с.