- Robert K. Merton papers, 1928-2003, bulk 1943-20015,506
- Harrison E. Salisbury papers, 1927-19995,456
- Human Rights Watch records: Record Group 1: Helsinki Watch, 1952-2003, bulk 1978-19945,391
- Judith Crist papers, 1930s-20125,300
- Columbia University Library Office files, 1890-19985,234
- Watkins Loomis records, 1883-2007 2013-20185,223
- Ian and Betty Ballantine Books and Business Records, 1935-1994, bulk 1945-19735,028
- Bob Fass Recordings and Papers, 1935-2011, bulk 1963-19914,952
- Gay J. McDougall South Africa and Namibia Papers, 1932-2006, bulk 1980-19944,919
- International Institute of Rural Reconstruction records, 1914-20184,843
- Wesley Clair Mitchell papers, 1898-19534,769
- Jack and Irene Delano papers, 1731-2003, bulk 1920-19974,756
- Edward Said Papers, 1940s-20064,694
- Manning Marable papers, 1967-20124,691
- Telford Taylor papers, 1918-1998, bulk 1949-19924,470
- RBML Office Files, 1917-20224,464
- Edwin H. Armstrong papers, 1886-1982, bulk 1912-19544,463
- Frances Perkins papers, 1895-19654,447
- Charles Tilly papers, 1600-2003, bulk 1937-19994,334
- Harper & Row Publishers records, 1935-19734,292