The Hughes, Ted mss. II, 1957-1962, consist of letters from poet Ted Hughes, 1930-1998, and poet Sylvia Plath, 1932-1963, to Hughes' brother and sister-in-law, Gerald and Joan Hughes.
The Thomas, T. mss., ca. 1976–1990, consist of the papers of Trevor Thomas, the neighbor of Sylvia Plath and the last person to see her alive. The collection contains materials relating to Thomas' memoir of Plath as well as documents from Ted Hughes' libel suit against him.