The Arikha mss., 1933-2011, consists of correspondence from writer Samuel Beckett, 1906-1989, to Avigdor Arikha, 1929-2010, and Arikha's wife, poet Anne Atik, 1932-. Arikha's various collected periodicals, catalogues, theatre ephemera, criticisms of Beckett, and other related items.
The Baker Street Irregulars mss., 1923-2007, consists of correspondence, business files, and publications of the Baker Street Irregulars, a Sherlock Holmes literary society founded in 1934.