The Maugham mss., 1904-1973, consist of the contracts and correspondence about those contracts for works by William Somerset Maugham, 1874-1965, English novelist and playwright.
The Corrigan mss., 1888-1941, consists of letters to publisher James William Corrigan, 1867?-1948, relating primarily to publishing matters in Great Britain and the United States.
The Corman mss. IV, 1991-1998, consists mostly of letters from poet, translator and editor Cid Corman, 1924-2004, to poet and publisher Darrin Daniel. They relate in part to the publication of Corman's poetry by Daniel at Cityful Press, but range broadly over literary and other matters.
The Corman mss. VI, 1993–2003, consist mostly of letters from poet, translator and editor Cid Corman, 1924–2004, to German poet and carpenter Charlie Mehrhoff.
The Corman mss. V, 1993–2002, consists of letters from poet, translator, and editor Sidney "Cid" Corman, 1924–2004, to poet and translator Nicolas Linkert.
The Courvoisier mss., 1861-1867, consists of the official papers of postmaster of Vevay, Indiana, and treasurer of Switzerland County, Indiana Frederick L. Courvoisier, 1832?-.
The Coster mss., 1877-1938, consists of letters to Lincoln collector Robert Coster, 1851?-1928, relating to Lincoln, and letters to his nephew Paul Coster, relating to Lincoln and to John Sherman.
The Committee of Returned Volunteers mss., 1967-1970, consists of the papers of the Committee of Returned Volunteers, Bloomington Chapter. The CRV is an organization of persons who have worked in voluntary service programs in Asia, Africa, and Latin America, and in the United States.
The Corbacho mss., 1912-1951, consists of correspondence and documents written by, sent to, and concerning historian and Peruvian diplomat,Jorge María Corbacho, 1881-1947, and his collection of Latin American manuscripts.
The Cravens mss., 1850-1872, consists of the correspondence and papers of farmer, soldier, Indiana legislator, and U.S. congressman James Addison Cravens, 1818-1893.
The Crawford mss., 1849-1864, consists of letters and papers of captain, Quartermaster's department, United States volunteers, and member of the Oregon legislature Medorem Crawford, 1819-1891.
The O'Brian mss., ca. 1970-1994, consists primarily of notes and full-text manuscripts of author Patrick O'Brian's historical sea novels. Autograph manuscripts for eighteen of the twenty published novels are present.