| OrderNo | Title | Date | Link |
| Douglas 44, ff. 52-71 | BULGAKOV, Rev. Sergius Nikolaivitch, Professor at the Russian Orthodox Theological Academy, Paris | nd | Douglas/44/45-190/52-71 |
| Douglas 44, ff. 179-85 | LAGORSKY, I., pupil of Kiev Theological Academy. | 1936 | Douglas/44/45-190/179-85 |
| Douglas 44, ff. 151-5 | FELLOWSHIP OF SAINT ALBAN AND SAINT SERGIUS. | 1935 | Douglas/44/45-190/151-5 |
| MS 2348 f. 45 | Bulgakov (Sergei Nikolaevich), Russian theologian | 1932 | MSS/2343-2411/2343-2348/2348/45 |
| Douglas 44, ff. 135-6 | ANDERSON, Paul B., European Director, Russian Service in Europe, International Committee, Young Men's Christian Associations of U.S.A and Canada | 1935 | Douglas/44/45-190/135-6 |
| Douglas 42, ff. 161-5 | BULGAKOV, Rev. Sergius Nikolaivitch, Professor at the Russian Orthodox Theological Academy, Paris | 1935-1936 | Douglas/42/124-208/161-5 |
| Douglas 44, f. 191 | EVLOGIOS, Vassily Gheorgievsky, Archbishop of Volhynia; Exarch for Russians in exile under Oecumenical Patriarch | 1938 | Douglas/44/191 |
| Ramsey 2, f. 23 | Letter to Arthur Michael RAMSEY, archbishop of Canterbury, on Sergius BULGAKOV, Russian theologian | 1936 | Ramsey/1-3/2/23 |
| Douglas 44, ff. 101-19 | SERGIUS, Metropolitan of Nishni-Novgorod; Patriarch of Moscow (1943). | 1935 | Douglas/44/45-190/101-19 |
| CFR CFR 46 | Students: Interchange of Students Committee: foreign students, A-K | 1933-1949 | CFR/1/3/46 |
| Douglas 24, f. 23 | ECONOMY, Principles and practice of. | 1932 | Douglas/24/23 |
| Douglas 45, ff. 6-7, 10-2, 47 | BULGAKOV, Rev. Sergius Nikolaivitch, Professor at the Russian Orthodox Theological Academy, Paris | 1927 | Douglas/45/3-335/6-7, 10-2, 47 |
| Douglas 44, ff. 45-190 | Papers concerning Rev. Sergius Nikolaivitch BULGAKOV, Professor at the Russian Orthodox Theological Academy, Paris | 1931-1936 | Douglas/44/45-190 |
| Douglas 44, ff. 45-9, 150 | BULGAKOV, Rev. Sergius Nikolaivitch, Professor at the Russian Orthodox Theological Academy, Paris | 1931, 1935 | Douglas/44/45-190/45-9, 150 |
| MS 4293 ff. 26-47 | I.R. Young, 'Memoranda on scheme of intercommunion suggested by the Very Rev. Sergius Bulgakov June 1934' | 11 November 1938 | MSS/4284-4296/4293/26-47 |
| CFR OC 231/2 | Individual Orthodox Churches: Russian Orthodox Churches In Exile: The Russian Clergy And Church Aid Fund | Jan-Oct 1940 | CFR/5/3/26/231-2 |
| Douglas 44, ff. 50-1 | ANDERSON, Paul B., European Director, Russian Service in Europe, International Committee, Young Men's Christian Associations of U.S.A and Canada | 1932 | Douglas/44/45-190/50-1 |
| Douglas 6, f. 56 | BULGAKOV, Rev. Sergius Nikolaivitch, Professor at the Russian Orthodox Theological Academy, Paris | 1931 | Douglas/6/1-230/56 |
| Douglas 76, f. 71 | Photographs of the World Conference on FAITH AND ORDER - Continuation Committee in Hertenstein, Switzland | 1934 | Douglas/76/66-74/71 |
| MS 4751 | General Secretary's Papers | 1933-1934 | MSS/4735-4767/4741-4764/4751 |
| MS 2649 ff. 37-8 | Bulgakov (Sergei Nikolaevich), Russian theologian | 1935 | MSS/2615-2650/2649/1-45/37-8 |
| Douglas 76, f. 39 | Photograph of Anglicans, Orthodox and Old Anglicans taken at the World Conference on FAITH AND ORDER at Lausanne | 1927 | Douglas/76/39-65/39 |
| Douglas 44, ff. 120-1 | SERGIUS, Metropolitan of Nishni-Novgorod; Patriarch of Moscow (1943). | 1935 | Douglas/44/45-190/120-1 |
| Douglas 44, ff. 122, 131-2, 154-5 | EVLOGIOS, Vassily Gheorgievsky, Archbishop of Volhynia; Exarch for Russians in exile under Oecumenical Patriarch | 1935 | Douglas/44/45-190/122, 131-2, 154-5 |