The Zanuck mss., 1935-1951, consist of inter-office correspondence and notes to and from Darryl Francis Zanuck, 1902-1979, producer, and other officials of the Twentieth Century-Fox film studio.
The Young, C. mss., 1935-2014, consist of the writings, correspondence, research materials, and personal papers of journalist and activist Charles M. Young.
The Yellen mss., 1863-1968, consist of the correspondence and writings of Samuel Yellen, 1906-1983, author and professor of English at Indiana University at Bloomington.
The Yeats mss., 1889-1954, consists of letters and writings of William Butler Yeats, 1865-1939, and materials about him, collected by Allan Wade, 1881-1955, compiler of A Bibliography of the Writings of W. B. Yeats... (London, 1951), and editor of The Letters of W. B. Yeats... (New York, 1955).
The X mss., 1928-1961, (principally 1959-1961), consist of the office files of X: A Quarterly Review, edited by David John Wright and Patrick Swift and published by Barrie and Rockliff, London, England, vol. I, no. 1, November 1959 to vol. II, no. 2, August 1961, inclusive.
The Wordsworth mss. III, 1806-1956, consist of correspondence of William Wordsworth, 1770-1850, and of Mrs. Dorothy (Wordsworth) Dickson; a photograph of a chalk drawing of Wordsworth; and a photograph of Mrs. Dickson.