Correspondence, mainly from the early fifties with political friends and left-wing historians like Edward H. Carr, Daniel Guérin, Ernest Mandel, Roman Rosdolsky, Alfred Rosmer, Bertrand Russell and others; correspondence with his publishers; 23 prewar letters from Leon Trotsky to Trotskyists (all published); original drafts etc., sometimes heavily edited, of his publications `Stalin, `Russia after Stalin', `The Trotsky Trilogy', `Heretics and Renegades', `Russia in Transition', `The great Contest', `The Age of Permanent Revolution', `Ironies of History', `The unfinished Revolution', `The Non-Jewish Jew', `Russia, China and the West', `Lenin's Childhood', `Marxism in our Time'; drafts of miscellaneous writings: articles, lectures and broadcasts; file on the International War Crimes Tribunal in Stockholm 1967; press clippings of most of his articles from 1944 onwards. Accrual 2014: Correspondence; personal and financial documents of Isaac and Tamara Deutscher; books, articles and broadcasts; notes; documents concerning writings, film and publishing of Tamara Deutscher; documents belonging to Martin Deutscher; image and sound material; documentation.