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.

Louis O. Coxe (Princeton Class of 1940) was a noted twentieth-century poet, playwright, and critic. The collection contains autograph and typescript versions of Coxe's poetry and sixteen of Coxe's notebooks. Also included are materials for the play Billy Budd, such as notes, drafts, worksheets, galley proofs, and production notes.

Consists of works, some accompanying correspondence, and photographs of poet, essayist, and church historian, Hubertis M.Cummings (Princeton Class of 1907).

Consists of selected correspondence, poetry, photographs, and printed material of and relating to 20th-century American poet Robert Frost.

Consists mainly of correspondence between family members of Arthur L. Frothingham, who was a Princeton professor of archaeology (1886-1905). The collection includes correspondence and family photographs from his father, Arthur L. Frothingham, mother, Jessie Peabody Frothingham, and sister, Jessie Peabody Frothingham. Also present are manuscripts concerning Arthur L. Frothingham's study (ca.1912) on arches in the Roman Empire.

Consists of selected papers of American novelist Caroline Gordon, including some of her correspondence with various family members, friends, and literary associates.

Consists mostly of correspondence among members of the NSDAP (Nationalsozialistiche Deutsches Arbiterspartei) and with Hitler's adjutants Wiedemann and Brückner. Original material from Hitler himself is limited and of no real contextual importance (birthday wishes, New Year's wishes, thanks for wishes made unto him, etc.). There are a few letters concerning Nazi "Judenpolitik" (Jewish policy), some regarding arrests and camp conditions, others concerning scandalous associations with Jews. Military concerns are few and interspersed throughout. The majority of the material, mostly directed to Hitler, consists of wishes of health, happy birthdays, thank you's. Most of the Nazi officers present at the Nuremburg Trials are featured in the collection.

Consists primarily of family correspondence of John Henry Hobart, a bishop of the Protestant Episcopal Church.

Consists primarily of material relating to Ohio farmer Luzern Humphrey's overland journey from Kanesville, Iowa, to the Oregon Territory in 1852, his life there through 1853, and his return to Iowa in 1854, including his journal and 51 letters to his wife in Ohio. Also included are some papers relating to the family of William Miller, the founder of Adventism.

Consists chiefly of letters of the Constitution signer and Philadelphia lawyer Jared Ingersoll to his son Charles while he was a student at the College of New Jersey (now Princeton University).

Consists of correspondence, manuscripts, and documents of members of the Joline family of Princeton, New Jersey.

Consists chiefly of letters and photographs of Arthur Machen, the Welsh-born writer called "the Apostle of Wonder" because of his mastery of the English language and outstanding creation of supernatural fiction.

Consists primarily of correspondence of the American educator, art critic, and museum director Frank Jewett Mather (1868-1953).

Consists of works, correspondence, documents, photographs, memorabilia, family papers, scrapbooks, and an autograph book (1880) of Charles Grosvenor Osgood, reflecting his role as one of Woodrow Wilson's original preceptors (1905) and the importance of the preceptorial system at Princeton. The collection contains typed manuscripts of Osgood's lectures on Milton, Spenser, and Samuel Johnson, addresses and note cards, and professional correspondence.

Consists of the personal papers of Ernest Cushing Richardson, librarian of Princeton University Library from 1890 till 1925.

Consists of original letters and transcriptions of additional letters by Edwin Arlington Robinson, American poet and winner of three Pulitzer Prizes.

The Auguste Rodin Collection contains over fifty Rodin letters, cards, telegrams, and notes, of which about half are in the hand of the sculptor.

Samuel Shellabarger attended Princeton University as member of the Princeton Class of 1909 and was an English professor between 1914-1923. The collection contains Samuel Shellabarger's manuscripts for two biographies and five works of historical fiction, as well as a small amount of miscellaneous material related to his writings.

Consists of works, correspondence, diaries, photographs, scrapbooks, and printed matter of J. Duncan Spaeth, a preceptor (1905-1911) and professor of English (1911-1935) at Princeton.

Consists of selected manuscripts, correspondence, and documents of the twentieth-century British biographer and bibliophile A. J. A. Symons.