The Sonnenschein, Hugo mss., 1945–1946, consists of four bound manuscripts of poetry and memoirs by Hugo Sonnenschein, 1889–1953, a German–language writer born in the Austro–Hungarian Empire, who often wrote under the pseudonym "Sonka."
The Smith, W.J. mss., 1947-2007, consists of writings, translations, correspondence, and research materials of poet and translator William Jay Smith, 1918-2015.
The Smith, Annette mss. 1964-2004, consists of the papers of Annette Smith, 1924-, Professor Emeritus of Literature at the California Institute of Technology.
The Simon, Greg mss., 1985-1998, consist of proofs, drafts, and correspondence relating to Simon's translation of Poet in New York by Federico Garcia Lorca.
The Seaver mss., 1969–1974, consists of the correspondence and documents from the files of Richard Seaver, 1926-2009, the American publisher of Octavio Paz, 1914-1998, concerning the translation and publication of Paz's Alternating Current (translated 1973) and Conjunctions and Disjunctions (translated 1974).
The Rubin, Jay mss., 1984-2006, consist of the corespondence, papers, manuscripts, and typescripts related to literary translations from the Japanese by translator Jay Rubin.