Manuscript and printed letters written by and to British and American abolitionists, including clippings of printed letters from Harriet Martineau to the National Anti-slavery standard and other newspapers. Subjects include the controversy between Martineau and the Standard, and Martineau's attitude to the approach of the Civil War. Correspondents include Harriet Martineau, Sarah Pugh, Auguste Langet, Maria Weston Chapman, and Maria's daughter Anne Chapman. Also included is a letter from Gordon S. Haight to E. R. B. Willis, dated 26 Dec. 1946, describing the collection.