Charles Lawton Campbell (Princeton Class of 1916) was an American playwright and advertising writer. His collection contains ninety-four drafts, fragments, and fully-conceived plays, as well as poems, essays, and an autobiography covering fifty years of his life as a devotee of the theater.

Included as part of the final gothic design of Princeton's Graduate School was a 173-foot tower, a national memorial to former U.S. President Grover Cleveland who was also chairman of the trustees' graduate school committee. The collection consists of 11 log books signed by visitors to the Cleveland Memorial Tower.

Consists primarily of correspondence relating to the work of Carver (Princeton Class of 1913) as secretary (1914-1915) to Walter H. Page, the American ambassador in London, as secretary (1915) to Edward Mandell House in Europe, and as assistant to Bernard M. Baruch working for the War Industries Board, and to his commission in the U.S. Navy attached to the Office of Naval Intelligence (1917-1918).

Clinton A. Decker traveled to Russia as part of the American Advisory Commission to Russia of Railway Experts (1917) and later became a member of the Inter-Allied Technical Board (1919-1922). The collection contains personal and business correspondence and photographs documenting Decker's travels in Russia, China, and Japan.

Clinton Wilder (Princeton Class of 1943) was an American theatrical producer. His collection consists of playbills he collected as well as typescripts and production materials of plays he produced.

The Clive Bell Correspondence collection consists of letters received by the English writer and art critic Clive Bell (1881-1964) from Raymond Mortimer, Harold Nicolson, and V. (Victoria) Sackville-West ["Vita"]. Their content reflects both personal and professional matters.

Collection of ephemera relating to the marketing of books, consisting of prospectuses, adverts, catalogs, etc.

Consists primarily of a few writings and field notes of American geologist Harry Hammond Hess (1906-1969).

The Committee on Safety and Insurance was an administrative organization that dealt with occupational safety and insurance issues throughout University facilities and departments. The records consist of Commitee minutes, accident reports, insurance policies, general subject files, and correspondence.

Consists of material relating to the American author Conrad Richter, including manuscripts, writing notebooks, notes, and galley proofs for several of his novels and other writings. Includes a substantial amount of personal and professional correspondence, as well as photographs.