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.

This collection contains various songbooks printed for Princeton University including bound volumes and small booklets. Among the former is a nearly complete series of the Carmina Princetonia. There is also a second series dedicated to sheet music comprising various songs written for Princeton University, including many pieces written by alumni.

Consists of selected papers of poet Neilson Abeel (Princeton Class of 1924).

Louis Adamic was an author deeply concerned with American immigrants and their experiences in the "melting pot." This collection consists of papers of Adamic, including manuscripts of his books, short stories, articles, and lectures, as well as sketches, paste-ups, and proofs of Adamic's own journal T & T. Also included are correspondence, subject files, and works of other writers.

Elmer Adler was a printer, publisher, editor, and author. This collection consists of the personal papers of Adler as well as the business archives of the Pynson Printers and The Colophon.

Consists of selected correspondence, manuscripts, and photographs of the Anglo-American poet W. H. Auden, one of the most acclaimed poets of the 20th century.

John James Audubon (1785-1851) was a nineteenth-century ornithologist, artist, and naturalist who published his illustrations of American birds and quadrupeds. This collection includes several original manuscripts, transcripts and photostats of manuscripts, correspondence of John James and Lucy Bakewell Audubon (originals and copies), and other printed materials related to Audubon, which have been assembled from various sources.

The Philip James Bailey Collection consists of correspondence, clippings, and miscellanea of the English poet Philip James Bailey (1816-1902).

Consists of correspondence, documents, photographs, and printed material relating to the professional career and personal life of American psychologist James Mark Baldwin (Princeton Class of 1884).

Aubrey Beardsley was an English draughtsman and author. The collection includes some of his Art Nouveau work, book illustrations, borders, chapter headings, title pages, and posters. Also included are various notes for his writing and holograph manuscripts of "Under the Hill" and "The Ivory Piece." Correspondence with friends and colleagues completes the collection.

Consists of correspondence and documents of Jonathan Belcher, dating from his early years in Massachusetts to his days as colonial governor of New Jersey.

Consists chiefly of correspondence of the American poet and novelist Maxwell Bodenheim.

Consists primarily of several versions, reflecting the printing stages, of Backbone of the Herring (1941), Curtis Bok's fictionalized look at courtroom justice seen through the eyes of a judge. Bok was a common pleas court judge in Pennsylavnia at the time.

Consists of manuscripts, correspondence, photographs, postcards, and clippings of Elizabeth Mann Borgese, her husband, Giuseppe Antonio Borgese, and her mother, Katia Mann.

Consists of autograph musical compositions, diaries, notebooks, and related material of Boswell, an American composer.

Elias Boudinot was a lawyer and Revolutionary statesman, serving as member of the Continental Congress (president, 1782), secretary of foreign affairs (1783-84), New Jersey congressman (1789-95), and director of the U.S. Mint (1795-1805). The collection consists of miscellaneous letters and documents of Boudinot, many of which concern his land dealings.

Consists of correspondence of the American architect and author Claude Fayette Bragdon, as well as related printed material.

Consists of mostly English correspondence and manuscripts of the Austrian author Hermann Broch.

Consists primarily of letters by Aaron Burr (Princeton Class of 1772) to members of his family and associates, along with some documents pertaining to his legal career.

Consists of correspondence, a typed manuscript, and printed material related to Willa Cather, one of the most respected American women novelists of the early twentieth century.