Consists chiefly of 48 letters by Sir Edward Coley Burne-Jones to his daughter, Margaret Burne-Jones (1866-1953), who married J. W. MacKail, a biographer of William Morris, in 1888.

Consists of notebooks, manuscripts, correspondence, photographs, and ephemera documenting the working career of the poet and small-press publisher, Stuart Mills (1940-2006).

Consists of an open collection of correspondence of Germano-French diplomat Louis-Guillaume Otto, comte de Mosloy (1754-1817), who served as Chargé d'affaires ad interim in Philadelphia and New York from 1787 to 1792, including 19 letters dating from October 19, 1789 to October 10, 1791, to fellow French diplomat Eléonore-François-Elie, marquis de Moustier (1751-1817), with a 10-page letter with the title "Bulletin," dated January 18, 1790; and two letters from Otto's father-in-law J. Hector St. John de Crèvecoeur, from February 23, 1799, and August 27, 1799, recounting his journeys through upper Pennsylvania and the state of New York.

Contains original manuscripts and multiple drafts for American screenwriter Ernest Lehman's works "North by Northwest" and "Somebody Up There Likes Me."

Allen W. Dulles (1893-1969), though a diplomat and lawyer, was renowned for his role in shaping United States intelligence operations, including the longest service as director of the Central Intelligence Agency (CIA). The Allen W. Dulles Digital Files contain scanned images of professional correspondence, reports, lectures, and administrative papers, declassified and released by the CIA in 2007. The collection spans Dulles's time as Chief of the Office of Strategic Services office in Bern, Switzerland during World War II, his work at the Central Intelligence Agency, and his retirement.

Consists of articles, correspondence, and related materials on astronomy of Newton Lacy Pierce, a professor of astronomy at Princeton University.

Contains approximately 110 letters by Aldous Huxley written to various friends and associates, including Arnold Bennett, Basil Ashmore, Edith Sitwell, Osbert Sitwell, and the American photographer Sanford Roth, collected by Goodwin Weinberg (Princeton Class of 1929).

Consists of selected nineteenth-century documents of Increase Billings Stoddard and his father, Robert Stoddard, landowners and farmers in New York State and Connecticut.

David Laurence Aaron (1938-) served as Deputy National Security Advisor from 1977–1981. The collection mostly documents Aaron's service under Jimmy Carter's administration, though records dating from his time working for Walter F. Mondale and in the private sector are also present.

Consists of selected letters and documents of James Monroe, fifth president of the United States.