Writings and correspondence of the Russian revolutionary leader Leon Trotsky, including drafts of articles and books, correspondence with John G. Wright and other leaders of the Socialist Workers Party of the United States, and typed copies of correspondence with V. I. Lenin; correspondence and reports of secretaries of Trotsky and leaders of the Socialist Workers Party, relating especially to efforts to safeguard Trotsky and to his assassination; records of the American Committee for the Defense of Leon Trotsky and of the Commission of Inquiry into the Charges Made against Leon Trotsky in the Moscow Trials; correspondence and writings of Natalii͡a Sedova Trot͡skai͡a and of Lev Sedov; and published and unpublished material relating to Trotsky. Assembled from records of the Socialist Workers Party and from papers of Wright and other party leaders. Also includes detailed summaries of correspondence in the Trotsky Papers at Harvard University. Also available on microfilm (50 reels). Phonotape cassette dub of sound recordings also available.