- Czesław Miłosz papers (GEN MSS 661)253
- Walt Whitman collection (YCAL MSS 202)253
- Edwin J. Beinecke Collection of Robert Louis Stevenson (GEN MSS 664)245
- Bryher papers (GEN MSS 97)244
- Richard Henry Pratt papers (WA MSS S-1174)238
- Norton Nicholls papers (Osborn c467)235
- The Southern Review records (YCAL MSS 694)224
- Franz R. and Kathryn M. Stenzel collection of western American art (WA MSS S-2368)195
- H. D. Papers (YCAL MSS 24)192
- Eugene O'Neill papers (YCAL MSS 123)180
- Ezra Stiles Papers (GEN MSS 1475)170
- J. M. Barrie collection (GEN MSS 1400)163
- Mina Loy papers (YCAL MSS 6)155
- Edmund Wilson papers (YCAL MSS 187)133
- Thornton Wilder papers (YCAL MSS 108)133
- Letters to Herbert Van Thal (GEN MSS 464)132
- Rachel Carson papers (YCAL MSS 46)128
- Mabel Dodge Luhan papers (YCAL MSS 196)127
- Walter O. Evans collection of Frederick Douglass and Douglass Family papers (JWJ MSS 240)119
- American Historical Financial Documents Collection (GEN MSS 1081)118