Westfield, New Jersey, was part of Elizabethtown from the time it was settled in late 1664 until 1794, when the Township of Westfield was created. The New Jersey Documents Collections, 1601 to 1983, consists of New Jersey legal documents, the bulk of which are from the town of Westfield, Union County, and include land records, financial records, estate records, and court records, many of which were created by various members of the Baker, Downer, Hetfield, Johnson, Miller, Pierson, Ripley, Ross, and Woodruff families. The majority of the collection material dates from 1750 to 1890.

Consists of original poems, stories, and essays that were printed in the special Autumn 2001/Winter 2002 issue of the Princeton University Library Chronicle on Jewish American writers.

Consists of selected papers of Lawrance Thompson, including manuscripts for his books on Robert Frost and Henry Wadsworth Longfellow, lecture typescripts, and a small amount of correspondence (1936-1942) from the time he was Princeton University Library's Curator of Manuscripts and editor of the Princeton University Library Chronicle.

Consists of a collection of miscellaneous legal and financial documents, correspondence, and other manuscript materials, assembled from various sources, that relate to New Jersey history or inhabitants of New Jersey from the late 17th century through the mid 20th century.

The Film Stills Collection consists of stills and publicity portraits of actors and actresses in the American film industry.

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

Consists of an open collection of miscellaneous letters and memorabilia of American novelist and dramatist Booth Tarkington (1869-1946).

Consists of an open collection containing miscellaneous source material related to Modern Greek studies, including letters, documents, artwork, and other unbound manuscript items.

Consists of a collection of letters and autographs of over 120 English, American, and a few European actors, actresses, playwrights, theatrical managers, directors, critics, and others connected with the theater from the late 19th and early 20th centuries.

Consists of manuscripts and letters of American novelist and Nobel Prize winner William Faulkner and related materials, including manuscripts of Maurice Coindreau's translation into French of four Faulkner novels.