- Early Yale documents collection (RU 1154)4
- Hipolite Dumas papers (MS 1422)4
- George Roy Hill papers (MS 1765)3
- Edward Parmelee Smith papers (MS 1136)2
- Historical picture collection (MS 713)2
- Linonian Society, Yale College, records (RU 206)2
- Potter Stewart papers (MS 1367)2
- Samuel Wells Williams family papers (MS 547)2
- Architectural drawings and maps of Yale University buildings and grounds (RU 1)1
- Associate University Librarian for Public Services, Yale University, records (RU 269)1
- Bingham family papers (MS 81)1
- Brown vs. Board of Education collection (MS 759)1
- Caroline S. D. McLanahan papers (MS 987)1
- Edith Banfield Jackson papers (MS 1296)1
- H. Page Cross papers (MS 776)1
- Immanuel Wallerstein collection of African liberation movement posters (MS 1865)1
- Louise Bryant papers (MS 1840)1
- Lucie Ruth Weinstein papers (MS 1807)1
- Mary A. Williams photographs of Memorial Quadrangle, Yale University (RU 683)1
- Mary Loughlin Bierman papers (MS 1628)1