Consists of selected correspondence, manuscripts, and galler proofs of W. S. Merwin, one of the most influential American poets of the latter 20th century.

Consists of a collection of photographs of World War I scenes in France that were tipped into photo albums. Some of them have appeared in published works.

Consists of selected correspondence, manuscripts, and other material related to World War II.

The Woodrow Wilson Collection consists of Wilson holdings which have been acquired by the Princeton University Library Special Collections gradually over many years by purchase and gifts from many sources. The collection is rich in material prior to Wilson's presidential years, although it is not limited to this period; researchers will find materials documenting both the public and private life of Woodrow Wilson. Various types of information written by or about Wilson are present in the collection, including manuscripts, addresses, articles, correspondence, telegrams, legal documents, booklets, pamphlets, photographs, portraits, cartoons, newspapers and scrapbooks.

The Woodrow Wilson Additional Materials consist of materials that the Seeley G. Mudd Manuscript Library has acquired on Woodrow Wilson since the mid-1990s.

William James Linton was an English-born engraver and political activist. The collection consists of 36 of Linton's letters, related correspondence, and other miscellaneous materials. Three manuscripts of poems, possibly Linton's, a manuscript of a novel by Elizabeth Fitzgerald, and unidentified artwork complete the collection.

Consists primarily of twenty-seven years of correspondence between music scholars J. Merrill Knapp and Winton Dean regarding George Frideric Handel's operas and their professional work and writings about them.

Contains selected correspondence of economics professor Winthrop M. Daniels (Princeton Class of 1888).

Consists of letters and drawings of William Yarrell, a nineteenth-century British naturalist, and related printed matter.

Consists of selected autograph manuscript poems and correspondence of William Wordsworth, one of England's most respected poets of the nineteenth century.