- Thomas Iorio Stonewall Vets video recordings33
- Jacques Barzun Papers32
- No Ivory Tower oral history collection32
- Phoenix House Foundation oral history collection31
- Jack and Irene Delano papers30
- Carnegie Endowment for International Peace New York and Washington Offices Records29
- Joseph Pulitzer papers29
- Miriam Braverman librarians oral history collection29
- Residence of Henry W. Poor - No. 1, Lexington Avenue, Gramercy Park, New York29
- Lenox Hill Hospital oral history collection28
- Meg McLagan Collection: The Tibet Movement in Exile, 1989-200328
- Robert A. Taft project28
- United States diplomats oral history collection28
- Lawyers Who Went South oral history collection27
- Harriman Institute oral history collection26
- Historical Subject Files26
- United Negro College Fund project26
- World Bank project26
- Albert Field Collection of Playing Cards25
- Emilie M. Townes Papers25
- Naval history project25
- Austrian project24
- George D. Woods project24
- Historical Photograph Collection24
- Iranian-American relations project23
- James Lawrence Fly project22
- Park Benjamin Book Collection22
- Physicians for reproductive health and choice oral history project22
- Book-of-the-Month Club project21
- Gail Mary Killian and Stephen Desroches sound recordings21
- American Bureau for Medical Aid to China Records20
- Max Neuhaus Papers20
- Book Arts Collection19
- Carnegie Foundation for the Advancement of Teaching Records19
- Dietrich Bonhoeffer Primary Sources19
- George A. Plimpton Papers19
- Historical Collection of Children's Literature19
- Speech Recordings Collection19
- Columbia University student COVID-19 oral history collection18
- Institute of Inter-American Affairs project18
- Sino-Tibetan Oral History Project18
- Tunisian Transition oral history collection18
- Douglas Putnam Haskell Papers17
- Occupation of Japan project17
- Forty Percent oral history collection on gun violence in America16
- Hematology project16
- Homelessness and Healing oral history collection16
- Mi María oral history collection16
- Mort Lindsey Scores and Papers16
- Women's International League for Peace and Freedom oral history collection16
- Arthur Levitt project15
- Independence National Historical Park project15
- Jessie Smith Noyes Foundation Oral History Collection15
- Nobel laureates on scientific research project15
- Psychoanalytic movement project15
- Richard Brick and Geri Ashur Collection15
- Simon Lissim Papers15
- Thomas Alva Edison project15
- Animal Advocates Oral History Collection14
- Dietrich Bonhoeffer Collection Secondary Source Material14