The papers of Mary Caroline Moorman (1905-1994), historian, biographer and daughter of the historian G.M. Trevelyan, cover the years 1872-1992. As well as usefully supplementing the Trevelyan Archives at Newcastle University Library, they are of considerable interest in themselves.

They mainly consist of letters from Mary Moorman's parents, George M. Trevelyan and Janet Penrose Trevelyan, née Ward. They also include some letters from Mary Moorman's extended family, such as Janet Ward's mother, the novelist Mary Augusta (Mrs. Humphry) Ward, her sister Dorothy and the Philips and Price relatives.