Collection
- Charles Richard Crane Papers, 1869-19671
- Charles Wilson Mixer papers, 1936-19711
- Christopher Coover collection of literary & historical letters manuscripts and documents, 1589-19231
- Columbia Forum records, 1956-19751
- Columbia LGBT records, 1961-1990, bulk 1967-19891
- Constance Baker Motley Papers, 1935-20061
- Corinne Comstock Weston letters, 1950-19691
- Corliss Lamont papers, 1891-19931
- Daniel Gregory Mason papers, 1894-19531
- Dolores Prida papers, 1948-20011
- Don Congdon records, 1973-20181
- Douglas Putnam Haskell papers, 1866-1979-(bulk 1949-1964).1
- E. James Lieberman papers, 1949-19961
- E.A. Efimovskii Papers, 1953-19641
- Edmund Clarence Stedman papers, 1840-19601
- Edwin H. Armstrong papers, 1886-1982, bulk 1912-19541
- Ekaterina Nikolaevna Roshchina-Insarova Papers, 1907-19501
- Eleanor M. Tilton papers, 1770-19911
- Elena Mogilat Papers, 1900-19811
- Eli Cantor papers, 1935-19851